| 发明名称 |
STROBING SCHEME AND KEYBOARD SENSING CIRCUIT FOR A ONE CHIP CALCULATOR |
| 摘要 |
<p>Circuitry having a unique strobing scheme to effectively drive both a light-emitting diode display and an associated keyboard directly from a single semiconductor chip. The circuitry accurately senses which of the keyboard keys is in a depressed condition in order that a suitable representation thereof may be displayed at an appropriate time.</p> |
| 申请公布号 |
CA1057402(A) |
申请公布日期 |
1979.06.26 |
| 申请号 |
CA19750242878 |
申请日期 |
1975.12.31 |
| 申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
SPENCE, JOHN R. |
| 分类号 |
G06F15/02;G06F3/023;G06F3/147;G09G3/20;H03M11/20;(IPC1-7):06F3/02 |
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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