JPH0242120U - - Google Patents
Info
- Publication number
- JPH0242120U JPH0242120U JP12230988U JP12230988U JPH0242120U JP H0242120 U JPH0242120 U JP H0242120U JP 12230988 U JP12230988 U JP 12230988U JP 12230988 U JP12230988 U JP 12230988U JP H0242120 U JPH0242120 U JP H0242120U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- resistor
- microcomputer
- diode
- constant voltage
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input From Keyboards Or The Like (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は従来例を示す回路図である。
１３…定電圧回路、１４…マイクロコンピユー
タ、１５…抵抗、１６…接点、１７…ダイオード
、１９…抵抗。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional example. 13... Constant voltage circuit, 14... Microcomputer, 15... Resistor, 16... Contact, 17... Diode, 19... Resistor.
Claims (1)
の出力端子間に抵抗と接点との直列回路を接点を
負極側にして接続し、前記抵抗と接点との間にダ
イオードをそのカソードを接点側にして順方向接
続し、前記ダイオードと抵抗との接続点を前記マ
イクロコンピユータの入力ポートに接続するとと
もに、前記接点を前記定電圧回路の入力端子間に
少なくとも抵抗を介して接続したことを特徴とす
るマイクロコンピユータの接点入力装置。 A series circuit of a resistor and a contact is connected between the output terminals of a constant voltage circuit that serves as the power supply for a microcomputer, with the contact on the negative terminal side, and a diode is connected between the resistor and the contact with its cathode on the contact side. a connection point between the diode and the resistor is connected to an input port of the microcomputer, and the contact point is connected between input terminals of the constant voltage circuit via at least a resistor. Contact input device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988122309U JPH0637465Y2 (en) | 1988-09-19 | 1988-09-19 | Microcomputer contact input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988122309U JPH0637465Y2 (en) | 1988-09-19 | 1988-09-19 | Microcomputer contact input device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0242120U true JPH0242120U (en) | 1990-03-23 |
| JPH0637465Y2 JPH0637465Y2 (en) | 1994-09-28 |
Family
ID=31370120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988122309U Expired - Lifetime JPH0637465Y2 (en) | 1988-09-19 | 1988-09-19 | Microcomputer contact input device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637465Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147327U (en) * | 1983-03-22 | 1984-10-02 | 株式会社ユ−シン | Switching input judgment circuit |
-
1988
- 1988-09-19 JP JP1988122309U patent/JPH0637465Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147327U (en) * | 1983-03-22 | 1984-10-02 | 株式会社ユ−シン | Switching input judgment circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637465Y2 (en) | 1994-09-28 |