JPS54107629A - Key input unit - Google Patents
Key input unitInfo
- Publication number
- JPS54107629A JPS54107629A JP1426678A JP1426678A JPS54107629A JP S54107629 A JPS54107629 A JP S54107629A JP 1426678 A JP1426678 A JP 1426678A JP 1426678 A JP1426678 A JP 1426678A JP S54107629 A JPS54107629 A JP S54107629A
- Authority
- JP
- Japan
- Prior art keywords
- key
- cpu
- input
- outputs
- key group
- 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
Abstract
PURPOSE: To save the number of keys, by independently driving each microprocessor with equality and by establishing the key input unit in common use the input of one key group for each processor.
CONSTITUTION: The flip flop 9 controls the signal selection circuit 6 that it is selected to the signal path inputted to the key group 3 for the signal from the outputs a4 to a7 of CPU 1 with Q output when S input is present and it is that from the outputs a11 to a14 when R input is present. For example, the key of the key group 4 is depressed, then the information is read in CPU 1 and pulse is given to C1, setting FF9. Thus, the signal selection circuit 6 holds so that the outputs a4 to a7 of CPU 1 are turned on and those a11 to a14 of CPU 2 are turned off. When the key of the key group 5 is depressed, the conditions are contraverse.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1426678A JPS54107629A (en) | 1978-02-10 | 1978-02-10 | Key input unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1426678A JPS54107629A (en) | 1978-02-10 | 1978-02-10 | Key input unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54107629A true JPS54107629A (en) | 1979-08-23 |
JPS5732805B2 JPS5732805B2 (en) | 1982-07-13 |
Family
ID=11856281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1426678A Granted JPS54107629A (en) | 1978-02-10 | 1978-02-10 | Key input unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54107629A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184716U (en) * | 1985-05-08 | 1986-11-18 | ||
JPS61185130U (en) * | 1985-05-08 | 1986-11-18 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60111202U (en) * | 1983-12-29 | 1985-07-27 | 石川島検査計測株式会社 | Impact test lateral bulge measuring device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5217727A (en) * | 1975-07-25 | 1977-02-09 | Bunker Ramo | Apparatus having master and auxiliary keyboard terminal devices |
JPS5288946U (en) * | 1975-12-25 | 1977-07-02 | ||
JPS52150939U (en) * | 1976-05-12 | 1977-11-16 |
-
1978
- 1978-02-10 JP JP1426678A patent/JPS54107629A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5217727A (en) * | 1975-07-25 | 1977-02-09 | Bunker Ramo | Apparatus having master and auxiliary keyboard terminal devices |
JPS5288946U (en) * | 1975-12-25 | 1977-07-02 | ||
JPS52150939U (en) * | 1976-05-12 | 1977-11-16 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184716U (en) * | 1985-05-08 | 1986-11-18 | ||
JPS61185130U (en) * | 1985-05-08 | 1986-11-18 | ||
JPH022734Y2 (en) * | 1985-05-08 | 1990-01-23 |
Also Published As
Publication number | Publication date |
---|---|
JPS5732805B2 (en) | 1982-07-13 |
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