A-AA+then

Serial (Printer). Computer Port (Connector)

Serial (Printer)

25 PIN D-SUB Male (25 PIN D-SUB Male ที่พริ้นเตอร์)
Pin Name Dir Description
1 SHIELD   Shield Ground
2 TXD --> Transmit Data
3 RXD <-- Receive Data
4 N/C   Not connected
5 N/C   Not connected
6 DSR <-- Data Set Ready
7 GND   System Ground
8 DCD <-- Data Carrier Detect
9 N/C   Not connected
10 N/C   Not connected
11 ? --> Reverse Channel
12 N/C   Not connected
13 N/C   Not connected
14 N/C   Not connected
15 N/C   Not connected
16 N/C   Not connected
17 TTY-TXD --> TTY Receive Data
18 N/C   Not connected
19 N/C   Not connected
20 DTR --> Data Terminal Ready
21 N/C   Not connected
22 N/C   Not connected
23 ? --> TTY Receive Data Return
24 ? <-- TTY Transmit Data Return
25 TTY-RXD <-- TTY Receive Data
^