
A |
Figure A-2 shows a way of wiring an EIA-232-D connector to enable a computer to connect to a basic terminal with only three lines. This is feasible because most terminals have a DTR signal that is ON, and which can be used to pull up the CTS, DCD, and DSR signals.
Two of these connectors wired
| |
GND | 1 |
TxD | 2 |
RxD | 3 |
RTS | 4 |
CTS | 5 |
DSR | 6 |
GND | 7 |
DCD | 8 |
| . . . . |
DTR | 20 |