JPS63195419U - - Google Patents
Info
- Publication number
- JPS63195419U JPS63195419U JP8442587U JP8442587U JPS63195419U JP S63195419 U JPS63195419 U JP S63195419U JP 8442587 U JP8442587 U JP 8442587U JP 8442587 U JP8442587 U JP 8442587U JP S63195419 U JPS63195419 U JP S63195419U
- Authority
- JP
- Japan
- Prior art keywords
- reset
- key switch
- reset signal
- host device
- keyboard
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す回路図である
。第２図は、第１図の実施例の要部の波形の一例
を示す波形図である。
１……上位装置からの信号線、２……電源投入
時の自己リセツト回路、３……手動リセツトキー
、４ａ，４ｂ，４ｃ……能動素子、５……ワイヤ
ーオア接続、６……キーボード制御部、７……リ
セツト入力端、８……上位装置のインタフエース
コネクタ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention. FIG. 2 is a waveform diagram showing an example of waveforms of essential parts of the embodiment of FIG. 1. 1... Signal line from host device, 2... Self-reset circuit when power is turned on, 3... Manual reset key, 4a, 4b, 4c... Active element, 5... Wire-or connection, 6... Keyboard control section , 7...Reset input terminal, 8... Interface connector of host device.
Claims (1)
キーボードに独立した手動リセツトキースイツチ
を設け、前記リセツトキースイツチの操作による
リセツト信号と、前記リセツトキースイツチの操
作によるリセツト信号以外のリセツト信号とを入
力とする論理和回路の出力を、前記制御部のリセ
ツト入力に接続したことを特徴とするキーボード
のリセツト回路。 (2) 前記リセツトキースイツチの操作によるリ
セツト信号以外のリセツト信号は、電源投入時の
電圧変化による自己リセツト信号か、あるいは上
位装置から受けたリセツト信号か、あるいは電源
投入時の電圧変化による自己リセツト信号および
上位装置から受けたリセツト信号である実用新案
登録請求の範囲第１項記載のキーボードのリセツ
ト回路。[Claims for Utility Model Registration] (1) An independent manual reset key switch is provided on a keyboard having a control section including a reset function therein, and a reset signal generated by the operation of the reset key switch and a reset signal generated by the operation of the reset key switch are provided. 1. A keyboard reset circuit, characterized in that an output of an OR circuit which inputs a reset signal other than the reset signal is connected to a reset input of the control section. (2) Reset signals other than those generated by operating the reset key switch mentioned above are self-reset signals caused by voltage changes when the power is turned on, reset signals received from a host device, or self-reset signals caused by voltage changes when the power is turned on. The keyboard reset circuit according to claim 1, which is a reset signal received from a host device and a reset signal received from a host device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8442587U JPS63195419U (en) | 1987-05-29 | 1987-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8442587U JPS63195419U (en) | 1987-05-29 | 1987-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63195419U true JPS63195419U (en) | 1988-12-15 |
Family
ID=30938914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8442587U Pending JPS63195419U (en) | 1987-05-29 | 1987-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63195419U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58189728A (en) * | 1982-04-28 | 1983-11-05 | Hitachi Ltd | Key input device |
-
1987
- 1987-05-29 JP JP8442587U patent/JPS63195419U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58189728A (en) * | 1982-04-28 | 1983-11-05 | Hitachi Ltd | Key input device |
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