JPS62117637U - - Google Patents
Info
- Publication number
- JPS62117637U JPS62117637U JP490886U JP490886U JPS62117637U JP S62117637 U JPS62117637 U JP S62117637U JP 490886 U JP490886 U JP 490886U JP 490886 U JP490886 U JP 490886U JP S62117637 U JPS62117637 U JP S62117637U
- Authority
- JP
- Japan
- Prior art keywords
- input device
- resistor
- pull
- power supply
- keyboard input
- 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
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
第1図は本考案に係るキーボード入力装置の回
路図、第2図は従来のキーボード入力装置の回路
図である。
10……マトリクス回路、11……デコーダ、
12,12′……プルアツプ抵抗、13,13′
……電源、X0〜Xm……走査線、Y0〜Y7…
…走査線。
FIG. 1 is a circuit diagram of a keyboard input device according to the present invention, and FIG. 2 is a circuit diagram of a conventional keyboard input device. 10...matrix circuit, 11...decoder,
12, 12'...Pull-up resistor, 13, 13'
...Power supply, X0 to Xm ...Scanning line, Y0 to Y7 ...
...scan line.
Claims (1)
れている走査線群を含むマトリクス回路を有する
キーボード入力装置において、前記走査線群の他
端側にもプルアツプ抵抗を介して電源が接続され
ていることを特徴とするキーボード入力装置。 In a keyboard input device having a matrix circuit including a group of scanning lines, one end of which is connected to a power supply via a pull-up resistor, the other end of the group of scanning lines is also connected to a power supply via a pull-up resistor. Characteristic keyboard input device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP490886U JPS62117637U (en) | 1986-01-16 | 1986-01-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP490886U JPS62117637U (en) | 1986-01-16 | 1986-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62117637U true JPS62117637U (en) | 1987-07-25 |
Family
ID=30786006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP490886U Pending JPS62117637U (en) | 1986-01-16 | 1986-01-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62117637U (en) |
-
1986
- 1986-01-16 JP JP490886U patent/JPS62117637U/ja active Pending