鍵盤接口定義
| [ 返回目錄 ] |
鍵盤接口爲 5 針母插座：
| 引腳定義 |
PC/AT 鍵盤接口的(de)引腳定義：
| Pin | Name | Description | Technical |
|---|---|---|---|
| 1 | CLOCK | Clock | CLK/CTS, Open-collector |
| 2 | DATA | Data | RxD/TxD/RTS, Open-collector |
| 3 | n/c | Not connected | Reset on some very old keyboards. |
| 4 | GND | Ground | |
| 5 | VCC | +5 VDC |
PC/XT 鍵盤接口的(de)引腳定義稍有不同：
| Pin | Name | Description | Technical |
|---|---|---|---|
| 1 | CLOCK | Clock | CLK/CTS, Open-collector |
| 2 | DATA | Data | RxD/TxD/RTS, Open-collector |
| 3 | Reset | Reset | |
| 4 | GND | Ground | |
| 5 | VCC | +5 VDC |