JPS5544664A - Keyboard control unit - Google Patents
Keyboard control unitInfo
- Publication number
- JPS5544664A JPS5544664A JP11836678A JP11836678A JPS5544664A JP S5544664 A JPS5544664 A JP S5544664A JP 11836678 A JP11836678 A JP 11836678A JP 11836678 A JP11836678 A JP 11836678A JP S5544664 A JPS5544664 A JP S5544664A
- Authority
- JP
- Japan
- Prior art keywords
- data
- control unit
- code
- constitution
- keyboard control
- 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
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To simplify the constitution and the logic for the keyboard control unit of the terminal in the device which carries out the transmission and reception of the data between the center and the terminal by receiving the signals sent repetitively in an convenient timing.
CONSTITUTION: The keyboard control unit gives a check for a fixed time TA and at the end of key scanning S17WS20 whether the data is sent from outside or not. Meanwhile the control unit receives the specified code from the data processor and draws it in as the new data if the received code is different from the preceding code, and at the same time transmits the ACK signal. In case the received code is identical to the preceding code, no data is drawn in but the ACK signal is transmitted. In such way, the data is received only for the specified period, thus simplifying the constitution.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11836678A JPS5544664A (en) | 1978-09-25 | 1978-09-25 | Keyboard control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11836678A JPS5544664A (en) | 1978-09-25 | 1978-09-25 | Keyboard control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5544664A true JPS5544664A (en) | 1980-03-29 |
Family
ID=14734922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11836678A Pending JPS5544664A (en) | 1978-09-25 | 1978-09-25 | Keyboard control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5544664A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6251937A (en) * | 1985-08-30 | 1987-03-06 | 株式会社アラップインターナショナル | Drip type irrigation apparatus |
JPS62231329A (en) * | 1986-03-31 | 1987-10-09 | Shimadzu Corp | Key input method for measured data processor |
-
1978
- 1978-09-25 JP JP11836678A patent/JPS5544664A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6251937A (en) * | 1985-08-30 | 1987-03-06 | 株式会社アラップインターナショナル | Drip type irrigation apparatus |
JPS62231329A (en) * | 1986-03-31 | 1987-10-09 | Shimadzu Corp | Key input method for measured data processor |
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