JPS5597633A - Keyboard control circuit - Google Patents
Keyboard control circuitInfo
- Publication number
- JPS5597633A JPS5597633A JP495479A JP495479A JPS5597633A JP S5597633 A JPS5597633 A JP S5597633A JP 495479 A JP495479 A JP 495479A JP 495479 A JP495479 A JP 495479A JP S5597633 A JPS5597633 A JP S5597633A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- mode
- shift mode
- keyboard
- generation circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To enhance function of the keyboard by switching the output signals of the switch circuit to the prescribed shift mode while the state of the shift mode memory circuit being held.
CONSTITUTION: One side of the output signals of shift mode memory circuit 12 and mode signal generation circuit 13 is selected through switch circuit 15 and then delivered to code generation circuit 16. In this case, the mode indication signal of "1" or "0" is generated automatically through mode indication signal generation circuit 17. And the output signal of circuit 15 can be switched to the specified shift mode which is set previously. As a result, a series of complicated operation caused by the extension code operation can be reduced, thus enhancing the function of the keyboard.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495479A JPS5597633A (en) | 1979-01-18 | 1979-01-18 | Keyboard control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495479A JPS5597633A (en) | 1979-01-18 | 1979-01-18 | Keyboard control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5597633A true JPS5597633A (en) | 1980-07-25 |
Family
ID=11597962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP495479A Pending JPS5597633A (en) | 1979-01-18 | 1979-01-18 | Keyboard control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5597633A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114935A (en) * | 1981-01-09 | 1982-07-17 | Toshiba Corp | Keyboard controller |
JPS58103027A (en) * | 1981-12-16 | 1983-06-18 | Toshiba Corp | Shift controller for key input prefetch |
JPS60187946U (en) * | 1984-05-24 | 1985-12-12 | カシオ計算機株式会社 | key input device |
JPS61109745U (en) * | 1984-12-21 | 1986-07-11 |
-
1979
- 1979-01-18 JP JP495479A patent/JPS5597633A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114935A (en) * | 1981-01-09 | 1982-07-17 | Toshiba Corp | Keyboard controller |
JPS58103027A (en) * | 1981-12-16 | 1983-06-18 | Toshiba Corp | Shift controller for key input prefetch |
JPH0312729B2 (en) * | 1981-12-16 | 1991-02-20 | Tokyo Shibaura Electric Co | |
JPS60187946U (en) * | 1984-05-24 | 1985-12-12 | カシオ計算機株式会社 | key input device |
JPS61109745U (en) * | 1984-12-21 | 1986-07-11 |
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