JPS5488726A - Data input unit - Google Patents

Data input unit

Info

Publication number
JPS5488726A
JPS5488726A JP15685877A JP15685877A JPS5488726A JP S5488726 A JPS5488726 A JP S5488726A JP 15685877 A JP15685877 A JP 15685877A JP 15685877 A JP15685877 A JP 15685877A JP S5488726 A JPS5488726 A JP S5488726A
Authority
JP
Japan
Prior art keywords
switch
address information
scanning
picked
matrix
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
Application number
JP15685877A
Other languages
Japanese (ja)
Other versions
JPS5616450B2 (en
Inventor
Yoichi Suzuki
Akio Hanada
Teruyoshi Mita
Fumio Hoshi
Masao Sato
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15685877A priority Critical patent/JPS5488726A/en
Publication of JPS5488726A publication Critical patent/JPS5488726A/en
Publication of JPS5616450B2 publication Critical patent/JPS5616450B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To prevent the pick up of the switch address in erroneous form, by picking up the switch address information, through the countermeasures against chattering and bouncing of switches and mistouching and double touch.
CONSTITUTION: The address information turned on or off is picked up by scanning the matrix switch 1 placed in matrix shape. In this case, the repetitive scanning circuit repetitively scanning the matrix switch 1 is provided and also, the address information pick up 6 set according to turning on or off of the switch detected at first during one scanning is provided with at least multi-pressing down FF. Further, on the condition that the synchronism taking the switch depression FF only at set state is continued for the number of times predetermined, the address information of the switch in ON or OFF state is picked up. Thus, the countermeasures against chaterring of switches etc. can prevent the switch address information in erroneous form from being picked up.
COPYRIGHT: (C)1979,JPO&Japio
JP15685877A 1977-12-26 1977-12-26 Data input unit Granted JPS5488726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15685877A JPS5488726A (en) 1977-12-26 1977-12-26 Data input unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15685877A JPS5488726A (en) 1977-12-26 1977-12-26 Data input unit

Publications (2)

Publication Number Publication Date
JPS5488726A true JPS5488726A (en) 1979-07-14
JPS5616450B2 JPS5616450B2 (en) 1981-04-16

Family

ID=15636910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15685877A Granted JPS5488726A (en) 1977-12-26 1977-12-26 Data input unit

Country Status (1)

Country Link
JP (1) JPS5488726A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666435U (en) * 1993-03-09 1994-09-20 親 中矢 Fall prevention device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152749A (en) * 1974-11-05 1976-05-10 Hitachi Ltd
JPS527517U (en) * 1975-07-02 1977-01-19
JPS5226838U (en) * 1975-08-15 1977-02-24

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527517B2 (en) * 1972-08-02 1977-03-02
DE2306780A1 (en) * 1973-02-12 1974-08-15 Hurth Masch Zahnrad Carl TOOTHED TOOL FOR FINISHING GEAR WHEELS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152749A (en) * 1974-11-05 1976-05-10 Hitachi Ltd
JPS527517U (en) * 1975-07-02 1977-01-19
JPS5226838U (en) * 1975-08-15 1977-02-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666435U (en) * 1993-03-09 1994-09-20 親 中矢 Fall prevention device

Also Published As

Publication number Publication date
JPS5616450B2 (en) 1981-04-16

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