JPS56108130A - Switch circuit - Google Patents
Switch circuitInfo
- Publication number
- JPS56108130A JPS56108130A JP1160580A JP1160580A JPS56108130A JP S56108130 A JPS56108130 A JP S56108130A JP 1160580 A JP1160580 A JP 1160580A JP 1160580 A JP1160580 A JP 1160580A JP S56108130 A JPS56108130 A JP S56108130A
- Authority
- JP
- Japan
- Prior art keywords
- output
- signal lines
- lines
- circuit
- switch
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE:To provide a number of key switches with a limited number of signal lines, by installing several groups of switches formed into a matrix with a common use secured among the input signal lines for each switch group and then securing a parallel connection among the output signal lines via a reverse current blocking circuit. CONSTITUTION:It is supposed that the scan signals of different timings are sent to the input signal lines 1, 2 and 3. Then the key switch S22 of the switch group 20 is pushed. Thus the scan signal of the input signal line 2 is delivered only to the output signal line 5 among the output signal lines 4, 5 and 6. At the same time, only the output of the OR circuit 25 in the switch group identifying circuit 28 becomes ''1'' with push of the switch S22 of the group 20. As a result, the signal is sent only to the line 30 among the output signal lines 29, 30, 31 and 32 in the circuit 28. Then the outputs of the lines 29-32 are supplied to the encoder 33, and the output of the encoder is obtained through the output lines 11 and 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1160580A JPS56108130A (en) | 1980-01-31 | 1980-01-31 | Switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1160580A JPS56108130A (en) | 1980-01-31 | 1980-01-31 | Switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56108130A true JPS56108130A (en) | 1981-08-27 |
Family
ID=11782530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1160580A Pending JPS56108130A (en) | 1980-01-31 | 1980-01-31 | Switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56108130A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890431U (en) * | 1981-12-11 | 1983-06-18 | 株式会社アドバンテスト | input device |
| JPS59128718A (en) * | 1983-01-13 | 1984-07-24 | 株式会社東海理化電機製作所 | Matrix switch |
| JPS6312224U (en) * | 1987-06-24 | 1988-01-27 | ||
| JPH01173121A (en) * | 1987-12-28 | 1989-07-07 | Matsushita Electric Ind Co Ltd | Data input device |
| JPH01220515A (en) * | 1988-02-26 | 1989-09-04 | Matsushita Electric Ind Co Ltd | Key matrix device |
-
1980
- 1980-01-31 JP JP1160580A patent/JPS56108130A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890431U (en) * | 1981-12-11 | 1983-06-18 | 株式会社アドバンテスト | input device |
| JPS59128718A (en) * | 1983-01-13 | 1984-07-24 | 株式会社東海理化電機製作所 | Matrix switch |
| JPS6312224U (en) * | 1987-06-24 | 1988-01-27 | ||
| JPH01173121A (en) * | 1987-12-28 | 1989-07-07 | Matsushita Electric Ind Co Ltd | Data input device |
| JPH01220515A (en) * | 1988-02-26 | 1989-09-04 | Matsushita Electric Ind Co Ltd | Key matrix device |
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