Epson PX-8 - 2.2 Operating The Computer

Table 1-12 CN7 (RS-232C Interface) Pin Assignments
8~76 REV.-A
5 3
4
2 1
Pin No.
Signal Name
Definition
1
GND
Signal
ground
2
TXD Transmit data (output)
3
RXD Receiving data (input)
4
RST
Request-to-send (output)
5
CTS Clear-to-send (input)
6 DSR
Data
set ready (output)
7
DTR
Data terminal ready (output)
8
CD Carrier detect
E FG Chassis ground
1-12