发明名称 |
Electronic multibase calculator |
摘要 |
A selectively alterable base numerical system in which a calculator implemented in a few semiconductor chips has a keyboard to enter numeric data and to command functions to be performed on the data by circuitry on the semiconductor chips in a first number base. The results of operations on the data in accordance with a selected function are then available as by way of a display. Circuitry is provided responsive to a keyboard base function input to change the results between number bases, preferably between hexadecimal, octal and decimal. A three chip calculator is provided where a data chip cooperates with two ROM chips and a manual keyboard input unit to permit operation selectively in any of several number bases and to change between bases at any point in a course of operations.
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申请公布号 |
US4121760(A) |
申请公布日期 |
1978.10.24 |
申请号 |
US19760684612 |
申请日期 |
1976.05.10 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
COCHRAN, MICHAEL J.;DONOHOE, LEONARD J. |
分类号 |
G06F15/02;(IPC1-7):H03K13/24 |
主分类号 |
G06F15/02 |
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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