Binary clock
A JavaScript version of a binary clock.
Pinout of the Compaq 2010c serial cable
The Compaq side of the cable looks like this:
(The pins have been numbered somewhat arbitrarily.) The PC side of the cable looks like this:
This is a standard 9-pin female sub-D connector, with the pins numbered in the usual way.
The connections are shown in the table below.
| PC pin | Compaq pins | Signal |
|---|---|---|
| 1 | 9, 13 | DCD (data carrier detect) |
| 2 | 6 | RxD (receive data) |
| 3 | 11 | TxD (transmit data) |
| 4 | 7 | DTR (data terminal ready) |
| 5 | 8 | SG (signal ground) |
| 6 | 8 | DSR (data set ready) |
| 7 | 12 | RTS (request to send) |
| 8 | 10 | CTS (clear to send) |
| 9 | not connected | RI (ring indicator) |