14 Sep
2007
14 Sep
'07
3:33 p.m.
On Fri, 14 Sep 2007, Tony Duell wrote:
IIRC, the PS/2 mouse interface and PS/2 keyboard
interface are very
similar. Both are TTL level interfaces with clock and data lines, both
have 4 signals on the connector (+5V, ground, clock, data), and the data
transfer protocol is much the same.
So why not use the same connector for the 2 interfaces?
Why, other than excessive stinginess did they switch to that, instead of
the REAL 5 pin DIN that even I can solder?