JPS5488726A - Data input unit - Google Patents
Data input unitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0666435U (en) * | 1993-03-09 | 1994-09-20 | 親 中矢 | Fall prevention device |
Citations (3)
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)
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 |
-
1977
- 1977-12-26 JP JP15685877A patent/JPS5488726A/en active Granted
Patent Citations (3)
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)
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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