JPS5544664A - Keyboard control unit - Google Patents

Keyboard control unit

Info

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
Application number
JP11836678A
Other languages
Japanese (ja)
Inventor
Kenzo Ono
Tsutomu Asabe
Hirokazu Yoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11836678A priority Critical patent/JPS5544664A/en
Publication of JPS5544664A publication Critical patent/JPS5544664A/en
Pending legal-status Critical Current

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
JP11836678A 1978-09-25 1978-09-25 Keyboard control unit Pending JPS5544664A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
KR840002183A (en) Encoder
JPS5544664A (en) Keyboard control unit
JPS51128571A (en) Portable electronic watch
JPS5573157A (en) Data communication system
JPS5452905A (en) Data communication monitor
JPS5398719A (en) Letter and picture communication unit
JPS554107A (en) Signal transmission system
JPS53123163A (en) Local testing system
JPS5318904A (en) Code receiving system
JPS5394104A (en) Circuit monitor system
JPS5538717A (en) Facsimile transmission equipment
JPS56127239A (en) Keyboard
JPS53105310A (en) Signal transmitter
JPS5544649A (en) Input control unit
JPS5493319A (en) Facsimile exchanging system
JPS5315703A (en) Semi-double data communication system
JPS55966A (en) Character transmission display system
JPS55105458A (en) Data transmission system
JPS5518750A (en) Shift switching method of keyboard
JPS554662A (en) Power supply control system
JPS5398717A (en) Transmission unit for still picture
JPS5469343A (en) Transmission-reception control unit
JPS5443431A (en) Communication control unit
JPS5525173A (en) Asynchronous processing system for external unit
JPS5337315A (en) Transmitting system for character information signal