JPS5567827A - Keyboard input device - Google Patents

Keyboard input device

Info

Publication number
JPS5567827A
JPS5567827A JP14114478A JP14114478A JPS5567827A JP S5567827 A JPS5567827 A JP S5567827A JP 14114478 A JP14114478 A JP 14114478A JP 14114478 A JP14114478 A JP 14114478A JP S5567827 A JPS5567827 A JP S5567827A
Authority
JP
Japan
Prior art keywords
key
keys
time
controllability
register
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
JP14114478A
Other languages
Japanese (ja)
Inventor
Toshiro Tokita
Hiroshi Uehara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14114478A priority Critical patent/JPS5567827A/en
Publication of JPS5567827A publication Critical patent/JPS5567827A/en
Pending legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To increase the key controllability by securing the sequence of the keys with no double keying in case plural number of the keys are hit virtually at one time and thus handling the key data effectively.
CONSTITUTION: In case plural number of keys are hit virtually at one time, control memory 8 reads out the coordinates of the 1st key from key matrix part 12 with the control given to memorize the key coordinates temporarily in register 13. At the same time, FF10 is set, and the pulses are inhibited from pulse generator circuit 1 via AND gate 11 to stop the operation of hexadecimal counter 2. After this, part 8 transfers the information of register 13 to memory 9 for memorization. Then the FF is reset with gate 11 opened, and the counting action is restarted for counter 2. At the same time, the reading is given for the next key. Thus the sequence of the key is kept with no double keying to handle the key data effectively. As a result, the key controllability can be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP14114478A 1978-11-17 1978-11-17 Keyboard input device Pending JPS5567827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14114478A JPS5567827A (en) 1978-11-17 1978-11-17 Keyboard input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14114478A JPS5567827A (en) 1978-11-17 1978-11-17 Keyboard input device

Publications (1)

Publication Number Publication Date
JPS5567827A true JPS5567827A (en) 1980-05-22

Family

ID=15285179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14114478A Pending JPS5567827A (en) 1978-11-17 1978-11-17 Keyboard input device

Country Status (1)

Country Link
JP (1) JPS5567827A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166434A (en) * 1982-03-29 1983-10-01 Fujitsu Ltd Concurrent operation protecting device of console key
JPH02105913A (en) * 1988-10-14 1990-04-18 Omron Tateisi Electron Co Terminal device for key input

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027439A (en) * 1973-07-10 1975-03-20
JPS5192986A (en) * 1975-02-12 1976-08-14
JPS53932A (en) * 1976-06-25 1978-01-07 Toshiba Corp Encoder circuit
JPS53126216A (en) * 1977-04-11 1978-11-04 Casio Comput Co Ltd Key input circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027439A (en) * 1973-07-10 1975-03-20
JPS5192986A (en) * 1975-02-12 1976-08-14
JPS53932A (en) * 1976-06-25 1978-01-07 Toshiba Corp Encoder circuit
JPS53126216A (en) * 1977-04-11 1978-11-04 Casio Comput Co Ltd Key input circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166434A (en) * 1982-03-29 1983-10-01 Fujitsu Ltd Concurrent operation protecting device of console key
JPH02105913A (en) * 1988-10-14 1990-04-18 Omron Tateisi Electron Co Terminal device for key input

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