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1. Uma regra de cálculo para cálculos Six Sigma, compreendendo: uma secção de exibição de escala estacionária uma secção de exibição de escala deslizante que desliza relativamente à referida secção estacionária uma escala de Defeitos por Unidade (DPU) exibida numa das referidas secções uma escala de Contagem de Oportunidades (OpCount) Exibida na outra das referidas sec�es em alinhamento com a referida escala de DPU e uma escala exibida numa das referidas sec�es para pelo menos dois par�etros seleccionados do grupo que consiste em Oportunidades de Defeitos por Mil�imo (DPMO), Classifica�o de Sigma e Cpk que cada medida como Um produto isento de defeitos é uma distribuição estatística de uma característica específica do produto e o seu deslocamento médio ao longo do tempo é estabelecido para estabelecer uma relação um para um entre os parâmetros de modo que um único movimento da referida secção deslizante se alinhe dado Os valores de DPU e OpCount calculam e exibem os valores para os parâmetros selecionados, mostrando pelo menos dois desses parâmetros aumentando a quantidade de dados disponíveis para um usuário e facilitando a correlação dos diferentes parâmetros. 2. Regra de cálculo de acordo com a reivindicação 1, incluindo escalas para cada um dos referidos parâmetros DPMO, Sigma e C pk que são apresentados de modo que os valores correspondentes para cada um dos referidos parâmetros DPMO, Sigma e C pk sejam estabelecidos a partir de valores alinhados dados de DPU E OpCount. 3. Regra de cálculo de acordo com a reivindicação 1, em que a referida escala OpCount é apresentada na referida secção deslizante. 4. Regra de cálculo de acordo com a reivindicação 1, em que as referidas escalas DPU e OpCount são ambas logarítmicas. 5. Regra de cálculo de acordo com a reivindicação 1, compreendendo ainda uma escala de rendimento de primeira vez (FTY) na mesma secção e alinhada com a referida escala de DPU. 6. Regra de cálculo de acordo com a reivindicação 5, caracterizada por a referida escala OpCount ser exibida na referida secção deslizante, a referida secção estacionária incluir uma janela para a referida escala OpCount e as referidas escalas DPU e FTY serem apresentadas na referida secção estacionária ao longo dos lados opostos da referida janela Alinhamento entre si. 7. Regra de cálculo de acordo com a reivindicação 6, incluindo escalas para cada um dos referidos parâmetros DPMO, Sigma Rating e C pk que são apresentados na referida secção deslizante em alinhamento um com o outro e com a referida escala OpCount, incluindo a referida secção estacionária janelas respectivas para visualização da referida secção DPMO, Sigma Rating e escalas C pk. 8. Regra de cálculo de acordo com a reivindicação 1, em que a referida escala de DPU se estende de cerca de 110 ° C a cerca de 10 ° C, e a referida escala OpCount estende-se desde cerca de 1 até cerca de 10 °. 9. Uma regra de cálculo para cálculos Seis Sigma, compreendendo: uma secção de exibição de escala estacionária uma secção de exibição de escala deslizante que desliza relativamente à referida secção estacionária uma escala de Produção de Primeiro Tempo (FTY) exibida numa das referidas secções uma escala de Contagem de Oportunidades (OpCount) Exibida na outra das referidas sec�es em alinhamento com a referida escala FTY e uma escala exibida numa das referidas sec�es para pelo menos dois par�etros seleccionados do grupo consistindo em DPMO (Defects Per Million Opportunities), Sigma Rating e C pk que cada medida como Um produto isento de defeitos é uma distribuição estatística de uma característica específica do produto e o seu deslocamento médio ao longo do tempo é estabelecido para estabelecer uma relação um para um entre os parâmetros de modo que um único movimento da referida secção deslizante se alinhe dado Os valores FTY e OpCount calculam e exibem os valores para os parâmetros selecionados, mostrando pelo menos dois desses parâmetros aumentando a quantidade de dados disponíveis para um usuário e facilitando a correlação dos diferentes parâmetros. 10. Regra de cálculo de acordo com a reivindicação 9, incluindo escalas para cada um dos referidos parâmetros DPMO, Sigma Rating e C pk que são apresentados de modo que os valores correspondentes para cada um dos referidos parâmetros DPMO, Sigma e C pk sejam estabelecidos a partir de valores alinhados dados de FTY E OpCount. 11. Regra de cálculo de acordo com a reivindicação 9, em que a referida escala OpCount é apresentada na referida secção deslizante. 12. A regra de cálculo de acordo com a reivindicação 9, em que as referidas escalas OpCount e DPMO são ambas logarítmicas. 13. Regra de cálculo de acordo com a reivindicação 9, em que a referida escala FTY se estende de cerca de 1 a cerca de 99,9999, e a referida escala OpCount estende-se desde cerca de 1 até cerca de 10 6. 14. Uma regra de cálculo para cálculos Six Sigma, compreendendo: uma secção de exibição de escala estacionária uma secção de exibição de escala deslizante que desliza relativamente à referida secção estacionária uma escala representando o Número de Oportunidades (OpCount) exibido numa das referidas secções uma pluralidade de escalas que representam pelo menos Dois de um primeiro conjunto de parâmetros Seis Sigma consistindo de defeitos por milhão Oportunidades (DPMO), Sigma Rating e C pk que cada medida como defeito-livre um produto é e são exibidos na mesma seção que a referida escala OpCount e pelo menos uma escala Representando pelo menos um de um segundo conjunto de parâmetros Seis Sigma consistindo em Defeitos por Unidade (DPU) e Primeiro Rendimento de Tempo (FTY) exibidos na outra das referidas secções, uma distribuição estatística de uma característica específica do produto e o seu desvio médio Ao longo do tempo para estabelecer uma relação de um para um entre os parâmetros no referido primeiro conjunto de modo que um único movimento do referido mostrador de escala de deslizamento para alinhar as referidas escalas de parâmetros de OpCount e de segundo conjunto calcula e apresenta os valores para os parâmetros seleccionados nos referidos Primeiro conjunto, o mostrador de pelo menos dois dos ditos parâmetros aumentando a quantidade de dados disponíveis para um utilizador e facilitando a correlação dos diferentes parâmetros. 15. Regra de cálculo de acordo com a reivindicação 14, em que a referida escala OpCount é apresentada na referida secção deslizante. 16. A regra de cálculo de acordo com a reivindicação 15, incluindo escalas para cada um dos referidos parâmetros DPU e FTY apresentados na referida secção estacionária, em que as referidas escalas DPU e FTY estão alinhadas uma com a outra. 17. Regra de cálculo de acordo com a reivindicação 16, a referida secção estacionária incluindo uma janela para a referida escala OpCount, em que as referidas escalas DPU e FTY são apresentadas ao longo de lados opostos da referida janela. 18. Regra de cálculo de acordo com a reivindicação 14, incluindo escalas para cada um dos referidos parâmetros DPMO, Sigma Rating e C pk. 19. Regra de cálculo de acordo com a reivindicação 14, incluindo escalas logarítmicas para cada um dos referidos parâmetros DPMO, DPU e OpCount. ANTECEDENTES DA INVENÇÃO 1. Campo da Invenção Esta invenção refere-se a uma regra de cálculo que implementa fórmulas associadas com o programa de análise de qualidade Seis Sigma. 2. Descrição da técnica relacionada Com o advento do mercado mundial e a correspondente procura de produtos altamente fiáveis ​​por parte dos consumidores, a qualidade tornou-se uma questão cada vez mais importante para os fabricantes. Quando são produzidos e vendidos produtos fabricados com defeitos, o resultado é perda de tempo de fabricação, bem como publicidade desfavorável para o fabricante. A qualidade de uma linha de produtos da empresa pode, portanto, desempenhar um papel decisivo na determinação da reputação da empresa. Como resultado dessa pressão por produtos sem defeitos, uma ênfase crescente está sendo colocada no controle de qualidade em todos os níveis, não é mais apenas um problema com os gerentes de controle de qualidade. Isto levou a várias iniciativas destinadas a melhorar a qualidade, tais como o Total Quality Management (TQM) e os programas de análise de qualidade Six Sigma. Uma visão geral do programa Seis Sigma é apresentada por Mikel J. Harry e J. Ronald Lawson em Six Sigma Análise de Producibilidade e Caracterização de Processos, Addison Wesley Publishing Co. pp. 1-1 a 1-5, 1992. O objetivo do Seis Sigma programa é reduzir significativamente o número de defeitos dentro dos produtos, especialmente quando esses produtos envolvem um grande número de componentes. Para isso, o programa Six Sigma faz uso de vários testes estatísticos que os trabalhadores e gestores usam para medir a qualidade dos produtos, tanto no desenvolvimento como na produção. Alguns destes testes envolvem terminologia específica. Uma oportunidade é tudo o que deve ser correto para produzir um produto ou serviço livre de defeitos, ou, em alternativa, qualquer coisa que pode dar errado e impedir que o produto funcione. Por exemplo, as oportunidades podem ser etapas em um processo de fabricação, ou partes e derivações em um conjunto de cartão de circuito. O número total de todas as oportunidades em um determinado produto é conhecido como contagem de oportunidades de produtos (OpCount). Um defeito refere-se a qualquer variação numa característica de um produto (por exemplo, o seu comprimento, largura, peso, etc.) que está suficientemente afastado do seu valor alvo para manter o produto a funcionar correctamente. Defeitos por unidade (DPU) é o número médio de defeitos por unidade (isto é, defeitos por produto). Esta taxa é normalmente normalizada para um milhão de oportunidades e referida como o número de defeitos por milhão de oportunidades (DPMO). Em geral, o DPMO é dado pelo The First Time Yield (FTY) é a porcentagem de unidades que estão completamente livres de defeitos. Como discutido nas páginas 2-4 a 2-8 da referência de Harry e Lawson, o FTY pode geralmente ser aproximado pela conhecida relação de Poisson: The Sigma Rating e C pk também são medidas de como um produto é livre de defeitos e São baseadas em estatísticas gaussianas, conforme explicado abaixo. A qualidade da produção pode ser rastreada traçando em histograma um parâmetro que mede uma característica específica do produto a ser fabricado (por exemplo, o seu comprimento) contra a frequência de produção. FIG. 1 mostra um tal histograma que compreende várias barras 10, em que a altura de uma barra representa o número de produtos que caem dentro de uma certa gama do parâmetro. As barras 10 tendem a reunir-se em torno de uma barra central 10, que está idealmente perto do ponto de concepção óptimo para o parâmetro em consideração. De acordo com o conhecido Teorema do Limite Central, um histograma de uma grande amostra tenderá para uma distribuição Gaussiana 14, independentemente de, digamos, as distribuições de Poisson ou binomiais para o parâmetro considerado serem assumidas. Esta função de distribuição gaussiana 14 é dada por EQU1 para - ltxlt, na qual a média estatística é dada por e é o desvio padrão. Aproximadamente 68 da área da função 14 está dentro de um desvio padrão (1) da média, 95 dentro de 2 dele, e 99.9999998 dentro de 6 de. Ao longo do tempo, no entanto, a média pode mudar longe do ponto de design ideal e tendem para uma nova média. Isto pode ser devido à degradação das ferramentas usadas na fabricação do produto, por exemplo. Isto é explicado dentro do formalismo de Seis Sigma de uma maneira ad hoc assumindo uma mudança adicional para a média de 1,5 para dar uma distribuição gaussiana modificada 16, como mostrado na FIG. 2, na qual a distribuição gaussiana 14 também foi replotada. A fração da distribuição Gaussiana modificada 16 (em que 1.5) que se encontra além do ponto 6 da distribuição gaussiana não modificada 14 corresponde a 3,4 partes por milhão (ppm), que é tipicamente o objetivo DPMO do programa Seis Sigma. Dessa forma, uma DPMO de 3,4 ppm é dita equivalente a uma Classificação Sigma de 6. Em geral, a Classificação Sigma pode ser determinada calculando o DPMO, correlacionando este valor com a área equivalente debaixo da distribuição gaussiana modificada 16 entre e alguns valores mais baixos Limite mais próximo e determinar quantos desvios-padrão da média não-modificada este limite inferior é deslocado. Assim, uma DPMO mais elevada corresponde a uma Classificação Sigma menor e vice-versa. O Rating Sigma também pode ser expresso por C pk. Que é discutido nas pp. 5-11 a 5-13 da referência de Harry e Lawson. Para o caso em apreço, pode ser expresso como: Assim, os parâmetros DPMO, Sigma Rating e C pk são expressões alternativas da frequência de defeitos em relação ao número total de oportunidades. Para calcular estes parâmetros pode ser complicado, mesmo se uma calculadora de mão é usada. Para evitar o inconveniente de usar calculadoras, as tabelas de consulta são freqüentemente usadas em vez disso, nas quais os vários parâmetros de interesse são listados em colunas e correlacionados entre si. No entanto, estas tabelas não proporcionam ao utilizador flexibilidade suficiente, e. É geralmente necessário interpolar entre os valores listados. Além disso, o usuário não é apresentado informações de uma forma que é interativo, de modo que uma sensação para os números ea relação das várias quantidades para o outro é perdido. Regras de slide existentes, mesmo aqueles envolvidos com processos estatísticos, não abordar as preocupações do usuário Six Sigma adequadamente. Por exemplo, o Tutor SPC da Dimensional Data Systems, 1990, é projetado para examinar várias capacidades de processo, incluindo C pk. Mas estes não são correlacionados com outros parâmetros de importância para o usuário de Seis Sigma, como DPU, FTY, OpCount, DPMO ea Sigma Rating. Assim, esta regra de cálculo particular é de nenhum benefício para o usuário Seis Sigma. SUMÁRIO DA INVENÇÃO A presente invenção é para uma regra de cálculo que calcula vários parâmetros associados com o programa de análise de qualidade Seis Sigma com um único movimento da corrediça. O usuário economiza tempo evitando o fastidio associado com planilhas e cálculos eletrônicos. A regra de cálculo dá ao utilizador a flexibilidade para fazer cálculos rapidamente e correlacionar os vários parâmetros discutidos aqui entre si em simultâneo, permitindo-lhe analisar rapidamente o desempenho de processos e peças num produto. A invenção inclui uma secção de apresentação em escala deslizante que é de preferência uma folha deslizante que tem escalas impressas sobre ela para quantidades tais como DPMO, Sigma Rating, C pk e OpCount. A folha deslizante desliza para uma secção de exibição de escala estacionária que inclui de preferência escalas para DPU e FTY localizadas em lados opostos de uma janela que combina com a escala OpCount. A secção estacionária também inclui janelas que permitem que as outras escalas da folha deslizante sejam vistas. Ao alinhar a escala OpCount com a escala DPU ou a escala FTY, o usuário pode calcular os valores DPMO, Sigma Rating e C pk correspondentes. As escalas DPU, OpCount e DPMO são preferencialmente logarítmicas. Outras características e vantagens da invenção serão evidentes para os especialistas na técnica a partir da descrição detalhada que se segue, tomada em conjunto com os desenhos anexos. DESCRIÇÃO DOS DESENHOS A FIG. 1 é um histograma ilustrando como uma grande amostra de produtos tende para uma distribuição Gaussiana em relação a um parâmetro de fabrico FIG. 2 é um gráfico que mostra uma distribuição Gaussiana típica e um Gaussiano médio deslocado que caracteriza a análise Seis Sigma e a FIG. 3 é uma vista em alçado ilustrando uma forma de realização preferida da invenção. DESCRI�O DETALHADA DA INVEN�O A inven�o funciona como uma regra de deslizamento e permite ao utilizador correlacionar, com um �ico movimento da l�ina, v�ios par�etros que s� vulgarmente utilizados no programa de an�ise de qualidade Six Sigma, tais como DPU, OpCount, FTY, DPMO , Sigma Rating e C pk. Compreende escalas para preferencialmente cada uma destas quantidades, algumas das quais são deslizantes, de modo que, por exemplo, os valores de OpCount e DPU podem ser seleccionados para gerar quantidades estatísticas relacionadas tais como DPMO, Sigma Rating e C pk. A forma de realização preferida é mostrada na FIG. E inclui uma secção de exibição de escala deslizante que é de preferência uma folha deslizante 20 que desliza para dentro e para fora de uma secção de exibição de escala estacionária que é de preferência uma secção de bolso estacionária 22, cujas extremidades estão ambas abertas. A folha deslizante 20 é preferencialmente feita de papel rígido ou de plástico e de preferência tem quatro escalas impressas sobre ela: uma escala DPMO 24, uma escala de Classificação Sigma 26, uma escala Cpk 28 e uma escala OpCount 30. Assim, as escalas 24, 26 , 28 e 30 deslizam para dentro e para fora da secção de bolso estacionária 22 com a sua folha deslizante 20. Todas as escalas aqui reveladas preferencialmente incluem uma série de marcas que são periodicamente designadas com números para indicar os seus valores. A secção de bolso estacionária 22 compreende, de preferência, uma folha de rosto 32 e uma folha posterior (não mostrada), tanto de papel rígido como de plástico, e fixadas em conjunto com fechos metálicos 36, de modo que a folha deslizante 20 fica alojada de forma segura na secção de bolso estacionária. As ranhuras de polegar 38 são cortadas numa ou em ambas as extremidades da folha de face 32, bem como na folha posterior da secção de bolso estacionária 22 para permitir ao utilizador agarrar mais facilmente a folha deslizante 20 depois de ter sido inserida na secção de bolso estacionária. A folha de rosto 32 tem de preferência duas escalas impressas sobre ela, uma escala DPU 40 e uma escala FTY 42, bem como três janelas 44 (isto é, furos cortados na folha de faceta) que permitem que as escalas 24, 26 e 28 da folha deslizante 20 sejam Visto quando esta folha é inserida na secção de bolso estacionária 22 e outra janela 46 para a escala OpCount 30. A janela 46 permite que a escala OpCount 30 seja alinhada quer na escala DPU 40 quer na escala FTY 42. Ao lado das janelas 44 estão impressos respectivos indicadores 48 que são preferencialmente flechas mutuamente alinhadas que apontam para valores correspondentes nas suas respectivas escalas. Além disso, a folha de rosto 32 inclui de preferência material impresso ao lado de cada uma das escalas 40 e 42 bem como janelas 44 e 46 para guiar o utilizador quanto ao significado de cada escala. Por exemplo, as palavras Defects per Unit (ou DPU) podem ser impressas acima da escala DPU 40, First Time Yield (ou FTY) ao lado da escala FTY 42 e assim por diante. A escala DPU 40, a escala OpCount 30 ea escala DPMO 24 são preferencialmente escalas logarítmicas. Os parâmetros DPU, OpCount e DPMO estão relacionados entre si através da relação linear dada pela equação (1), de modo que se os valores de dois desses três parâmetros forem conhecidos, o terceiro pode ser calculado. A situação mais comumente encontrada é quando DPU e OpCount são conhecidos. Neste caso, os valores para estes parâmetros são seleccionados com as escalas DPU e OpCount 40 e 30 alinhando os dois valores entre si e o valor correspondente para DPMO é lido na escala DPMO 24 com o seu indicador 48. Uma situação na qual os valores para DPMO e DPU ou OpCount são conhecidos, o valor DPMO pode ser selecionado com o indicador 48 da escala DPMO 24 e, em seguida, o valor DPU (ou OpCount) pode ser encontrado na respectiva escala, com a Valor do parâmetro remanescente sendo então lido da sua escala. Os parâmetros Sigma Rating e C pk estão relacionados entre si pela equação (4), e a DPMO através das relações de função gaussianas discutidas acima. Uma vez que existe uma relação de um para um entre estes parâmetros, um valor conhecido para um estabelece os outros dois. As escalas para DPMO 24, Sigma Rating 26 e C pk 28 estão alinhadas espacialmente uma em relação à outra na folha deslizante 20 de modo que os seus valores sob os respectivos indicadores 48 reflictam esta relação um para um. A escala de DPU 40 e a escala FTY 42, que estão localizadas na folha de face 32, têm uma relação de um para um entre si dada pela equação (2). Este facto é reflectido no posicionamento relativo da escala DPU 40 e da escala FTY 42, que estão preferencialmente localizados em lados opostos da janela 46. As marcas da escala OpCount 30 preferencialmente estendem-se ao longo de todo o comprimento da janela 46, de modo que podem ser utilizadas Como um guia para o olho ao fazer esta correlação entre as escalas DPU e FTY 40 e 42. Assim, se os valores para FTY e OpCount forem conhecidos, os valores para DPMO, Sigma Rating e C pk podem ser calculados. Os intervalos preferidos para as escalas dos parâmetros aqui revelados são: DPU (110 -6 a 10), OpCount (1 a 10), FTY (99,9999 a 1), DPMO (10 6 a 0,02), Classificação Sigma (1,5 a 7,0) , E C pk (0 a 1,85). Embora tenha sido mostrada e descrita uma concretização particular da invenção, ocorrerão para os especialistas na técnica inúmeras variações e formas de realização alternativas. Por conseguinte, pretende-se que a invenção ser limitada apenas em termos das reivindicações anexado. Piano chave finder acorde indicador forex Piano chave finder acorde indicador forex Piano chave finder acorde indicador forex sistemas de negociação forex apresentam a facilidade de negociação de múltiplos sistemas e múltiplos mercados. Opções binárias negociação retirada rentável: Sistemas de opiniões e enviar o seu próprio comércio: todos os dias de setembro. Terminal T3 - vôos internacionais e domésticos (com exceção das operadoras de baixo custo listadas acima). 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Its best if you avoid usingmon keywords when searching for B1 Neu Zertifikat. Other niches and vice versa. Data shorings reflect a weak economic policy framework, particularly at the federal level. Ksanik It is necessary to look will love Constantine Fomich Nizhegorodtsev My friend told me about his impotence and the way he stopped it dimastik For you sex is a must Then youve got to know something anemon Thank you for a good article AntonioV Between us, I think, is obvious. I recommend looking for the answer to your question in google Fabjus What a crazy idea 8 of 10 on the basis of 33961 ReviewAn instructional device for use by music students is constructed as an outer sleeve having a slide member fitted within it. The outer sleeve has first and second sets of openings and is imprinted with a representation of a piano keyboard. The slide member has alphabetic representations of musical notes showing through the first set of openings as the slide member is moved. One alphabetic representation shows the musical key selected and seven others display the notes of the chromatic scale and major and minor chords associated with that key. A first series of markings sized and located to show through the second set of openings will indicate the piano keys related to the chromatic scale selected. Additional sets of openings and markings on the slide member indicate the piano keys associated with the major and minor chords selected. These piano keys shown by colored markings or specially shaped openings. Belasco, David A. Belasco Jacobs Townsley, LLP 1. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key and first and second enlarged end sections, said enlarged end sections being attached at said first and second ends of said slide member said enlarged end sections being sized and shaped to prevent their passage through said interior cavity whereby, when the slide member is moved through the interior cavity to permit alignment of the alphabetic representations with the first set of openings, the slide member will remain permanently and slidably attached to the outer sleeve and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 2. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces said second set of openings being of a first predetermined shape a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key a third set of openings in said outer sleeve, said third set of openings being of a second predetermined shape and disposed upon said representation of a portion of a piano keyboard and a second series of markings, said second series of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the sleeve member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 3. A piano key finder and chord indicator as described in claim 2, further comprising: a fourth set of openings in said outer sleeve, said fourth set of openings being of a third predetermined shape and disposed upon said representation of a portion of a piano keyboard and a third series of markings, said third series of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 4. A piano key finder and chord indicator, comprising: an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second sets of openings penetrating at least one of said front and rear surfaces a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion said first portion carrying alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key said second portion having a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key said first series of markings being of a first predetermined color a fifth set of openings in said outer sleeve, said fifth set of openings being disposed upon said representation of a portion of a piano keyboard and a fourth set of markings, said fourth set of markings being of a second predetermined color and being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and whereby, when a user moves the slide member within said inner cavity of said outer sleeve, aligning one of the first set of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. 5. A piano key finder and chord indicator as described in claim 4, further comprising: a sixth set of openings in said outer sleeve, said sixth set of openings being disposed upon said representation of a portion of a piano keyboard and a fifth series of markings, said fifth series of markings being of a third predetermined color and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 6. A piano key finder and chord indicator as described in claim 5, further comprising: a fifth and sixth set of openings in said outer sleeve, said fifth and sixth set of openings being disposed upon said representation of a portion of a piano keyboard and a fourth and fifth series of markings, said fourth and fifth series of markings being of second and third predetermined colors respectively, and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings. 7. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key, comprising steps of: providing an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of said front and rear surfaces providing a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion marking said first portion with alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key providing said second portion with a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key moving said slide member within said inner cavity of said outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings providing the second set of openings in the outer sleeve in a first predetermined shape providing a third set of openings in said outer sleeve, said third set of openings being of a second predetermined shape and disposed upon said representation of a portion of a piano keyboard providing a second set of markings, said second set of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the major chord associated with the selected musical key. 8. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key as described in claim 7, further comprising the steps of: providing a fourth set of openings in said outer sleeve, said fourth set of openings being of a third predetermined shape and disposed upon said representation of a portion of a piano keyboard providing a third set of markings, said third set of markings being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the minor chord associated with the selected musical key. 9. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key, comprising steps of: providing an outer sleeve, said outer sleeve being formed of semi-rigid material and having a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity said interior cavity being open at said first and second ends of said outer sleeve said outer sleeve having a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of said front and rear surfaces providing a slide member, said slide member having first and second ends and being sized and shaped to fit slidably within said interior cavity said slide member having a first portion and a second portion marking said first portion with alphabetic representations, said representations being sized and shaped to be visible through said first set of openings in said outer sleeve as said slide member is moved through said outer sleeve said alphabetic representations illustrating a selected musical key, a chromatic scale, a major chord and a minor chord associated with said musical key providing said second portion with a first series of markings, said first markings being sized and shaped to be visible through said second set of openings in said outer sleeve as said slide member is moved through said outer sleeve said first markings indicating piano keys associated with the chromatic scale associated with said selected musical key said first set of markings being in a first predetermined color moving said slide member within said inner cavity of said outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings providing a third set of openings in said outer sleeve, said third set of openings being disposed upon said representation of a portion of a piano keyboard and providing a second set of markings, said second set of markings being of a second predetermined color and being disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the major chord associated with the selected musical key. 10. A method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key as described in claim 9, further comprising the steps of: providing a fourth set of openings in said outer sleeve, said fourth set of openings being disposed upon said representation of a portion of a piano keyboard providing a third set of markings, said third set of markings being of a third predetermined color and disposed upon said second portion of said slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key aligning said sleeve member with the outer sleeve so that said alphabetic representation associated with the selected key is visible through one of the first set of openings and displaying the piano keys associated with the minor chord associated with the selected musical key. FIELD OF INVENTION The invention pertains to teaching and learning aids for musical instruments. More particularly, the invention relates to a device for helping piano students to determine which notes and piano keyboard locations are associated with the chromatic scale for each key and which major and minor chords are associated with that key. BACKGROUND OF THE INVENTION Various hand-held devices have been developed for assisting music teachers and students to determine the notes and chord combinations associated with each key. These inventions involve different types of wheels, rotating cylinders, vertical and horizontal slides and similar devices. Some of these inventions illustrate fingering combinations for use with a guitar. Pat. No. 4,960,029 issued to Nelson is directed to a musical scale-determining device. The device has a thin sheet material body constructed of either paper or plastic or some other rigid material. Printed on the front surface are a number of longitudinally oriented rows of musical notes. Two of the rows are located within an upper section and two of the rows are located in a lower section. Located on the front surface are a series of indicators comprising a pointer that point either to the upper section or the lower section, or both. Located on the back surface of the body are vertical rows of musical notes, again located in an upper section and a lower section. Formed within the back surface of a cursor are a series of transparent windows for observing a single column of three notes within either an upper section or a lower section. This cursor is slidable and is used to determine the major and minor chords for different keys. Within the front surface of the cursor are also located a plurality of windows with identifying indicia as Roman Numerals IVIII to denote major sharp and flat scales. The cursor is also formed of thin sheet material and forms an internal chamber into which the necked down section of the body is disposed. Pat. No. 3,668,967 issued to Malis, is directed to a chord indicator in the form of a slide rule device. The device is comprised of a first elongated slide, a second elongated slide carried within the first slide, and an outer elongated indicator which is adapted to slidably receive and contain the first and second slides. The first slide is an elongated sleeve, which surrounds the second slide, and indicator is also an elongated sleeve, which surrounds the second slide. The first slide has a series of indexing windows extending completely through the front face at a location near the right end thereof to show corresponding chord type identification. The front face of the first slide also includes a plurality of apertures along its length, which are substantially equal in size to and are adapted to uncover spots on the second slide. The first slide also has imprinted along the lower edge of its front surface a series of characters, which represent the various notes in the scale. Manipulation of the slides permit identification of the chord name, title or selection of a particular chord, identification of the notes in that chord, the chord type, and other useful musical information. Pat. No. 6,031,172, issued to Papadopoulos is directed to music teaching aid. The teaching aid comprises a cylindrical body, the periphery of which is substantially covered by a plurality of reference rings that have independent rotary movement. As seen, each ring is divided into twelve segments, each of which has an identification that represents the successive notes of the chromatic scale. It is seen that appropriate manipulation of these rings with accompanying teaching aids permits one to identify all possible types of scales, major, minor and chord constructions. Pat. No. 675,345 issued to Bauer is directed to a music chart circa 1901. It is seen that there is a music chart with a face-plate and a back plate which is ruled longitudinally to form a series of subdivisions or rows to indicate the principal major chords and corresponding minor chords which are identifying through the use of a slider which can be appropriately slidingly displaced to identify major keys, minor key, dominant chords and tonic triads. Pat. No. 5,386,757 issued to Derrick is directed to a universal musical scale, scale pattern, and chord indicator. Device housing is of a slide-rule nature and is generally a hollow envelope-shaped enclosure open at either end and designed to function interdependently with any pre-selected sliding member. A number of sliding members are provided with indicia indicative of the degrees of a musical scale respectively printed adjacent to each display window formed in housing. As seen, the combination of the primary housing with a particular sliding member provides information to identify certain characteristics within musical scales and assist in the identification of chords, tone indicators and other musical qualities. While other variations exist, the above-described designs for note and chord identifying devices are typical of those encountered in the prior art. It is an objective of the present invention to provide a simple, portable device for use by piano students and teachers to determine the notes of the chromatic scale for each key. It is a further objective to provide a device that indicates the piano keyboard locations for each such note. It is a still further objective of the invention to identify the major and minor chords associated with each key. It is yet a further objective to indicate the keyboard locations of each of the major and minor chords. Finally, it is an objective of the invention to provide the above-described capabilities in an inexpensive and durable device that may be easily and inexpensively manufactured. While some of the objectives of the present invention are disclosed in the prior art, none of the inventions found include all of the requirements identified. SUMMARY OF THE INVENTION The present invention addresses all of the deficiencies of prior piano key finder and chord indicator inventions and satisfies all of the objectives described above. (1) A piano key finder and chord indicator providing the desired features may be constructed from the following components. Means are provided for displaying alphabetic representations of a chromatic scale associated with a selected musical key. Means are provided for displaying alphabetic representations of major and minor chords associated with the selected musical key. Means are provided for indicating piano keys associated with the chromatic scale associated with the selected musical key. (2) In a variant of the invention, an outer sleeve is provided. The outer sleeve is formed of semi-rigid material and has a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity. The interior cavity is open at the first and second ends of the outer sleeve. The outer sleeve has a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of the front and rear surfaces. A slide member is provided. The slide member has first and second ends and is sized and shaped to fit slidably within the interior cavity. The slide member has a first portion and a second portion. The first portion carries alphabetic representations. The representations are sized and shaped to be visible through the first set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The alphabetic representations illustrate a selected musical key, a chromatic scale a major chord and a minor chord associated with the musical key. The second portion has a first series of markings. The first markings are sized and shaped to be visible through the second set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The first markings indicate piano keys associated with the chromatic scale associated with the selected musical key. When a user moves the slide member within the inner cavity of the outer sleeve, aligning one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key, the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key will be visible through the first set of openings and the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. (3) In another variant, the piano key finder and chord indicator further includes means for preventing the slide member from being removed from the outer sleeve. (4) In yet another variant, the means for preventing the slide member from is removed from the outer sleeve further includes first and second enlarged end sections. The enlarged end sections are attached at the first and second ends of the slide member. The enlarged end sections are sized and shaped to prevent their passage through the interior cavity. When the slide member is moved through the interior cavity to permit alignment of the alphabetic representations with the first the series of openings, the slide member will remain permanently and slidably attached to the outer sleeve. (5) In still another variant, at least one finger notch is provided. The finger notch is located at either of the first and second ends of the outer sleeve. When the first end of the slide member is aligned with the first end of the inner sleeve, the finger notch will permit the slide member to be either of pulled from and pushed into the outer sleeve. (6) In a further variant of the invention, the second set of openings in the outer sleeve are of a first predetermined shape. (7) In still a further variant, a third set of openings in the outer sleeve is provided. The third set of is of a second predetermined shape and located on the representation of a portion of a piano keyboard. A second series of markings is provided. The second series of markings is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the sleeve member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (8) In another variant, a fourth set of openings in the outer sleeve is provided. The fourth set of openings is of a third predetermined shape and located on the representation of a portion of a piano keyboard. A third series of markings is provided. The third series of markings is located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (9) In yet another variant, a third and a fourth set of openings in the outer sleeve are provided. The third set of openings is of a second predetermined shape, the fourth set of openings is of a third predetermined shape. The third and fourth set of openings are located upon the representation of a portion of a piano keyboard. Second and third series of marking are provided. The second and third series of markings are located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (10) In still another variant, the first series of markings are of a first predetermined color. (11) In still a further variant, a fifth set of openings in the outer sleeve is provided. The fifth set of openings is located on the representation of a portion of a piano keyboard. A fourth series of markings is provided. The fourth series of markings is of a second predetermined color and is located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (12) In yet a further variant of the invention, a sixth set of openings in the outer sleeve is provided. The sixth set of openings is located on the representation of a portion of a piano keyboard. A fifth series of markings is provided. The fifth series of markings is of a third predetermined color and located upon the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (13) In still a further variant, a fifth and a sixth set of openings in the outer sleeve are provided. The fifth and sixth sets of openings are located on the representation of a portion of a piano keyboard. A fourth and a fifth series of markings are provided. The fourth and fifth series of markings are of second and third predetermined colors, and located on the second portion of the slide member. The fourth and fifth sets of markings are positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key when the slide member is aligned with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. (14) In a further variant of the invention, a method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key is providing, which includes steps of: Providing an outer sleeve. The outer sleeve is formed of semi-rigid material and has a front surface, a back surface, top and bottom edges, first and second ends and an interior cavity. The interior cavity is open at the first and second ends of the outer sleeve. The outer sleeve has a representation of a portion of a piano keyboard and first and second series of openings penetrating at least one of the front and rear surfaces. Providing a slide member. The slide member has first and second ends and is sized and shaped to fit slidably within the interior cavity. The slide member has a first portion and a second portion. Marking the first portion with alphabetic representations. The representations are sized and shaped to be visible through the first set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The alphabetic representations illustrate a selected musical key, a chromatic scale, a major chord and a minor chord associated with the musical key. Providing the second portion with a first series of markings. The first markings is sized and shaped to be visible through the second set of openings in the outer sleeve as the slide member is moved through the outer sleeve. The first markings indicate piano keys associated with the chromatic scale associated with the selected musical key. Moving the slide member within the inner cavity of the outer sleeve to align one of the first series of openings in the outer sleeve with one of the alphabetic representations illustrating a selected musical key. Displaying the alphabetic representations for each note of the chromatic scale as well as major and minor chords associated with that selected musical key through the first series of openings. Displaying the first markings indicating the piano keys associated with the chromatic scale will be visible through the second set of openings. (15) In still a further variant, the method of displaying an alphabetic representation of a chromatic scale, major and minor chords and identifying piano keys associated with a selected musical key further includes the step of providing the second set of openings in the outer sleeve in a first predetermined shape. (16) In yet a further variant, the method includes the additional steps of: Providing a third set of openings in the outer sleeve. The third set of openings is of a second predetermined shape and located on the representation of a portion of a piano keyboard. Poviding a second set of markings. The second set of markings is located on the second portion of the slide member and positioned so as to indicate the pianos keys associated with a major chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major chord associated with the selected musical key. (17) In another variant the method includes the additional steps of: Providing a fourth set of openings in the outer sleeve. The fourth set of openings is of a third predetermined shape and located on the representation of a portion of a piano keyboard. Providing a third set of markings. The third set of markings is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (18) In still another variant, the method includes the additional steps of: Providing a third set and a fourth set of openings in the outer sleeve. The third and fourth sets of openings are of second and third predetermined shapes and located on the representation of a portion of a piano keyboard. Providing a second set and a third set of markings. The second and third sets of markings are located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (19) In yet another variant, the method includes the additional step of providing the first set of markings in a first predetermined color. (20) In a further variant, the method includes the additional steps of: Providing a third set of openings in the outer sleeve. The third set of openings is located on the representation of a portion of a piano keyboard. Providing a second set of markings. The second set of markings is of a second predetermined color and is located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a major chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major chord associated with the selected musical key. (21) In still a further variant, the method includes the additional steps of: Providing a fourth set of openings in the outer sleeve. The fourth set of openings is located on the representation of a portion of a piano keyboard. Providing a third set of markings, The third set of markings is of a third predetermined color and located on the second portion of the slide member and positioned so as to indicate the piano keys associated with a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the minor chord associated with the selected musical key. (22) In a final variant, the method includes the additional steps of: Providing a third and a fourth set of openings in the outer sleeve. The third and fourth sets of openings are located upon the representation of a portion of a piano keyboard. Providing a second and a third set of markings. The second and third sets of markings are of second and third predetermined colors and located on the second portion of the slide member. The second and third sets of markings are positioned so as to indicate the piano keys associated with a major chord and a minor chord for a selected key. Aligning the sleeve member with the outer sleeve so that the alphabetic representation associated with the selected key is visible through one of the first set of openings. Displaying the piano keys associated with the major and minor chord associated with the selected musical key. An appreciation of the other aims and objectives of the present invention and an understanding of it may be achieved by referring to the accompanying drawings and the detailed description of a preferred embodiment. DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the preferred embodiment of the invention illustrating how the two main components interact FIG. 2 is a plan view of the preferred embodiment of the invention illustrating the operation of the invention FIG. 3 is a plain view of an embodiment that includes a means for preventing the slide member from being removed from the outer sleeve FIG. 4 is a plan view of another embodiment that includes a means for preventing the slide member from being removed from the outer sleeve FIG. 5 is a plan view of an embodiment that includes a means for allowing a user to pull or push the slide member when it is aligned with the edge of the outer sleeve FIG. 6 is a plan view of an embodiment where the second set of openings are of a predetermined shape FIG. 7 is a plan view of an embodiment of the invention that includes a third set of opening and a second series of markings FIG. 8 is a plan view of an embodiment of the invention that includes a fourth set of openings and a third series of markings FIG. 9 is a plan view of an embodiment of the invention that includes both a third and fourth sets of openings and a second and third series of markings FIG. 10 is a plan view of an embodiment of the invention that includes a fifth set of openings and several series of markings that are of predetermined colors FIG. 11 is a plan view of an embodiment of the invention that includes a sixth set of openings and several series of markings that are of predetermined colors and FIG. 12 is a plan view of an embodiment of the invention that includes both a fifth and sixth sets of openings and several series of markings that are of predetermined colors DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT (1) FIGS. 15 illustrate a piano key finder and chord indicator 10 providing the desired features that may be constructed from the following components. As illustrated in FIGS. 1 and 2, means 15 are provided for displaying alphabetic representations 17 of a chromatic scale 20 associated with a selected musical key 25 . Means 30 are provided for displaying alphabetic representations 17 of major 35 and minor 40 chords associated with the selected musical key 25 . Means 45 are provided for indicating piano keys associated with the chromatic scale 20 associated with the selected musical key 25 . (2) In a variant of the invention, an outer sleeve 55 is provided. The outer sleeve 55 is formed of semi-rigid material and has a front surface 60 . a back surface 65 . top 70 and bottom 75 edges, first 80 and second 85 ends and an interior cavity 90 . The interior cavity 90 is open at the first 80 and second 85 ends of the outer sleeve 55 . The outer sleeve 55 has a representation of a portion of a piano keyboard 95 and first 100 and second 105 sets of openings penetrating at least one of the front 60 and rear 65 surfaces. A slide member 110 is provided. The slide member 110 has first 115 and second 120 ends and is sized and shaped to fit slidably within the interior cavity 90 . The slide member 110 has a first portion 125 and a second portion 130 . The first portion 125 carries alphabetic representations 17 . The representations 17 are sized and shaped to be visible through the first set of openings 100 in the outer sleeve 55 as the slide member 110 is moved through the outer sleeve 55 . The alphabetic representations 17 illustrate a selected musical key 25 . a chromatic scale 20 . a major chord 35 and a minor chord 40 associated with the musical key 25 . The second portion 130 has a first series of markings 140 . The first markings 140 are sized and shaped to be visible through the second set of openings 105 in the outer sleeve 55 as the slide member 110 is moved through the outer sleeve 55 . The first markings 140 indicate piano keys associated with the chromatic scale 20 associated with the selected musical key 25 . When a user moves the slide member 110 within the interior cavity 90 of the outer sleeve 55 . aligning one of the first set of openings 100 in the outer sleeve 55 with one of the alphabetic representations 17 illustrating a selected musical key 25 . the alphabetic representations 17 for each note of the chromatic scale 20 as well as major 35 and minor 40 chords associated with that selected musical key 25 will be visible through the first set of openings 100 and the first markings 140 indicating the piano keys associated with the chromatic scale 20 will be visible through the second set of openings 105 . (3) In another variant, as illustrated in FIGS. 3 and 4, the piano key finder and chord indicator 10 further includes means 145 for preventing the slide member 10 from being removed from the outer sleeve 55 . (4) In yet another variant, as illustrated in FIGS. 3 and 4, the means 145 for preventing the slide member 110 from being removed from the outer sleeve 55 further includes first 150 and second 155 enlarged end sections. The enlarged end sections 150 . 155 are attached at the first 115 and second 120 ends of the slide member 110 . The enlarged end sections 150 . 155 are sized and shaped to prevent their passage through the interior cavity 90 . When the slide member 110 is moved through the interior cavity 90 to permit alignment of the alphabetic representations 17 with the first the series of openings 100 . the slide member 110 will remain permanently and slidably attached to the outer sleeve 55 . (5) In still another variant, as illustrated in FIG. 5, at least one finger notch 160 is provided. The finger notch 160 is located at either of the first 80 and second 85 ends of the outer sleeve 55 . When the first end 115 of the slide member 110 is aligned with the first end of the outer sleeve 55 . the finger notch 160 will permit the slider member 110 to be either pulled from or pushed into the outer sleeve 55 . (6) In a further variant of the invention, as illustrated in FIG. 6, the second set of openings 105 in the outer sleeve 55 are of a first predetermined shape 170 . (7) In still a further variant, as illustrated in FIG. 7, a third set of openings 175 in the outer sleeve 55 is provided. The third set of openings 175 is of a second predetermined shape 180 and located on the representation of a portion of a piano keyboard 95 . A second series of markings 185 is provided. The second series of markings 185 is located on the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a major chord 35 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (8) In another variant, as illustrated in FIG. 8, a fourth set of openings 190 in the outer sleeve 55 is provided. The fourth set of openings 190 is of a third predetermined shape 195 and located on the representation of a portion of a piano keyboard 95 . A third series of markings 200 is provided. The third set series of markings 200 is located upon the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (9) In yet another variant, as illustrated in FIG. 9, a third 175 and a fourth 190 set of openings in the outer sleeve 55 are provided. The third set of openings 175 is of a second predetermined shape 180 . the fourth set of openings 190 is of a third predetermined shape 195 . The third 175 and fourth 190 set of openings are located upon the representation of a portion of a piano keyboard 95 . Second 185 and third 200 series of markings are provided. The second 185 and third 200 sets of markings are located on the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a major chord 35 and a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (10) In still another variant, as illustrated in FIG. 10, the first series of markings 140 are of a first predetermined color 220 . (11) In still a further variant, as illustrated in FIG. 10, a fifth set of openings 235 in the outer sleeve 55 is provided. The fifth set of openings 235 is located on the representation of a portion of a piano keyboard 95 . A fourth series of markings 240 is provided. The fourth series of markings 240 are of a second predetermined color 225 and is located upon the second portion 130 of the slide member 110 and positioned so as to indicate piano keys associated with a major chord 35 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (12) In yet a further variant of the invention, as illustrated in FIG. 11, a sixth set of openings 245 in the outer sleeve is provided. The sixth set of openings 245 is located on the representation of a portion of a piano keyboard 95 . A fifth series of markings 215 are provided. The fifth series of markings 215 are of a third predetermined color 230 . The markings are located upon the second portion 130 of the slide member 110 and positioned so as to indicate the piano keys associated with a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 . (13) In still a further variant, as illustrated in FIG. 12, fifth 235 and a sixth 245 set of openings in the outer, sleeve 55 are provided. The fifth 235 and a sixth 245 sets of openings are located on the representation of a portion of a piano keyboard 95 . A fourth 240 and a fifth 215 series of markings 200 are provided. The fourth 240 and a fifth 215 series of markings are of second 225 and third 230 predetermined colors and located on the second portion 130 of the slide member 110 . The fourth 240 and a fifth 215 series of markings are positioned so as to indicate the piano keys associated with a major chord 35 and a minor chord 40 for a selected key 25 when the slide member 110 is aligned with the outer sleeve 55 so that the alphabetic representation 17 associated with the selected key 25 is visible through one of the first set of openings 100 .