And if you were to go back a few more years into the past, you’d have found when you bought a mouse with a PS/2 connector fitted, it may well have come with an adapter for a 9-pin RS232 serial port.

The guys at Nerdkits have put together this tutorial on connecting a PS/2 keyboard to a microcontroller. Though this tutorial is written for one of the kits they sell, you should be able to apply ...

The bus mouse connector looked like a PS/2 connector, but the pins were not the same. See mouse and PS/2 port. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.