JPS56153434A - Contact detecting circuit for keyboard - Google Patents
Contact detecting circuit for keyboardInfo
- Publication number
- JPS56153434A JPS56153434A JP5732380A JP5732380A JPS56153434A JP S56153434 A JPS56153434 A JP S56153434A JP 5732380 A JP5732380 A JP 5732380A JP 5732380 A JP5732380 A JP 5732380A JP S56153434 A JPS56153434 A JP S56153434A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse generator
- detection
- pulse
- time
- 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.)
- Granted
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
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
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)
Abstract
PURPOSE:To arrange the circuit so that one detection signal is produced slower than the other detection signal in such a manner as to vary the time for generation of the detection signals of rows and lines and as to generate set pulses and strobe signals based on the OR output signal thereof. CONSTITUTION:When a detection signal is generated in any of contacts Y1-0- Yn-0 based on key operation, an input signal is applied to a pulse generator 3. The pulse generator 3 generates a set pulse SP after lapse of the preset time T3 from the timing at which the input signal is applied thereto. At this point of time, the detection signals generating at the connection points X1-0, Y1-0 are set respectively in temporary memory devices 1, 2. The set pulse SP is applied to a pulse generator 4, and the pulse generator 4 generates a strobe signal STB after the preset time T4. By this signal, the data of the devices 1, 2 are read out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5732380A JPS56153434A (en) | 1980-04-30 | 1980-04-30 | Contact detecting circuit for keyboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5732380A JPS56153434A (en) | 1980-04-30 | 1980-04-30 | Contact detecting circuit for keyboard |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56153434A true JPS56153434A (en) | 1981-11-27 |
JPS6243209B2 JPS6243209B2 (en) | 1987-09-11 |
Family
ID=13052363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5732380A Granted JPS56153434A (en) | 1980-04-30 | 1980-04-30 | Contact detecting circuit for keyboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56153434A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6312223U (en) * | 1986-07-08 | 1988-01-27 | ||
JP2007137468A (en) * | 2005-11-17 | 2007-06-07 | Sadao Hachiman | Heat insulation expressing adhesive label |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11130263A (en) * | 1997-10-27 | 1999-05-18 | Yaskawa Electric Corp | Loading pattern preparation |
-
1980
- 1980-04-30 JP JP5732380A patent/JPS56153434A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6312223U (en) * | 1986-07-08 | 1988-01-27 | ||
JP2007137468A (en) * | 2005-11-17 | 2007-06-07 | Sadao Hachiman | Heat insulation expressing adhesive label |
Also Published As
Publication number | Publication date |
---|---|
JPS6243209B2 (en) | 1987-09-11 |
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