发明名称 |
Electronic calculator having means for directly inputting variables into a prestored and displayed equation |
摘要 |
An electronic calculator having a first input mode for inputting one or more algebraic equations, a display for displaying the variable terms of the input equations, and an indicator for selectively indicating any one of the variables being displayed. A second input mode is provided for inputting numeric data in a direct one-to-one relationship with the displayed variables, the input numeric data being simultaneously displayed with their corresponding variables. A calculator operation is performed by the device upon instruction by an operator whereby the input numeric data is substituted for the respective input variables for a selected equation. The display will show the result of the calculation in a position of the display corresponding to the position where an output variable term is displayed. Accordingly, a numerical calculation may be performed by selecting a stored equation and directly inputting numeric data in a one-to-one correspondence with variables in the displayed selected equation.
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申请公布号 |
US4811257(A) |
申请公布日期 |
1989.03.07 |
申请号 |
US19850711021 |
申请日期 |
1985.03.12 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
SUMITANI, TOSHIHIKO;NATSUHARA, AKIRA |
分类号 |
G06F15/04;G06F9/06;G06F15/02;(IPC1-7):G06F7/38 |
主分类号 |
G06F15/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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