PC串行口引脚定义
PC/AT 机上的串行口是 9 针公插座,引脚定义为:
Pin | Name | Dir | Description |
---|---|---|---|
1 | CD | Carrier Detect | |
2 | RXD | Receive Data | |
3 | TXD | Transmit Data | |
4 | DTR | Data Terminal Ready | |
5 | GND | System Ground | |
6 | DSR | Data Set Ready | |
7 | RTS | Request to Send | |
8 | CTS | Clear to Send | |
9 | RI | Ring Indicator |
PC/XT 机上的串行口是 25 针公插座,引脚定义为:
Pin | Name | Dir | Description |
---|---|---|---|
1 | SHIELD | - | Shield Ground |
2 | TXD | Transmit Data | |
3 | RXD | Receive Data | |
4 | RTS | Request to Send | |
5 | CTS | Clear to Send | |
6 | DSR | Data Set Ready | |
7 | GND | - | System Ground |
8 | CD | Carrier Detect | |
9 | n/c | - |
|
10 | n/c | - |
|
11 | n/c | - |
|
12 | n/c | - |
|
13 | n/c | - |
|
14 | n/c | - |
|
15 | n/c | - |
|
16 | n/c | - |
|
17 | n/c | - |
|
18 | n/c | - |
|
19 | n/c | - |
|
20 | DTR | Data Terminal Ready | |
21 | n/c | - |
|
22 | RI | Ring Indicator | |
23 | n/c | - |
|
24 | n/c | - |
|
25 | n/c | - |
|
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