PC/AT 機上的串列口是 9 針公插座,引腳定義為:
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 機上的串列口是 25 針公插座,引腳定義為:
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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