JPS56114031A - Input data reading in system - Google Patents
Input data reading in systemInfo
- Publication number
- JPS56114031A JPS56114031A JP1701380A JP1701380A JPS56114031A JP S56114031 A JPS56114031 A JP S56114031A JP 1701380 A JP1701380 A JP 1701380A JP 1701380 A JP1701380 A JP 1701380A JP S56114031 A JPS56114031 A JP S56114031A
- Authority
- JP
- Japan
- Prior art keywords
- level
- line
- ports
- input
- input data
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/20—Dynamic coding, i.e. by key scanning
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE:To increase the number of input data readings as well as increase the reading speed, by installing a pair of NOR gate circuits at the output port of a digital signal process device which reads the input data. CONSTITUTION:A 4-input NOR circuit comprising the diodes 17-0-17-3, transistor TR11 plus resistances 18-20 is installed at the output ports 6-0-6-3 of the digital signal process device 4. The scanning line 12 led out from the collector of the TR19 is connected to the switching elements 13-0-13-3 each to form a data input matrix circuit. When either one of the ports 6-0-6-3 is at H level, the line 12 is set at L level. When the ports 6-0-6-3 are at L level each, the line 12 is set at H level. As the pulse train emerging on the line 12 is applied to the matrix circuit, the line 12 is set at H level in the time interval t7 during which the scan completes for one of the ports 6-0-6-3 and the next scan is carried out. Thus the elements 13-0-13-3 can read the input pulses. During this period, the pulse reading process is carried out by the software, thus realizing an increment of number of the reading data.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1701380A JPS56114031A (en) | 1980-02-14 | 1980-02-14 | Input data reading in system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1701380A JPS56114031A (en) | 1980-02-14 | 1980-02-14 | Input data reading in system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56114031A true JPS56114031A (en) | 1981-09-08 |
JPS6240732B2 JPS6240732B2 (en) | 1987-08-29 |
Family
ID=11932107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1701380A Granted JPS56114031A (en) | 1980-02-14 | 1980-02-14 | Input data reading in system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56114031A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58217038A (en) * | 1982-05-07 | 1983-12-16 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Data input keyboard unit |
JPS59189436A (en) * | 1983-04-12 | 1984-10-27 | Hitachi Heating Appliance Co Ltd | Keyboard switch of electronic range |
JPS59182746U (en) * | 1983-05-19 | 1984-12-05 | 日本ビクター株式会社 | Switch status reading device |
-
1980
- 1980-02-14 JP JP1701380A patent/JPS56114031A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58217038A (en) * | 1982-05-07 | 1983-12-16 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Data input keyboard unit |
JPS59189436A (en) * | 1983-04-12 | 1984-10-27 | Hitachi Heating Appliance Co Ltd | Keyboard switch of electronic range |
JPS59182746U (en) * | 1983-05-19 | 1984-12-05 | 日本ビクター株式会社 | Switch status reading device |
Also Published As
Publication number | Publication date |
---|---|
JPS6240732B2 (en) | 1987-08-29 |
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