can somebody help me out on how to interface an 8051 ic to a 8742 keyboard controller ic..?? i am connecting a keyboard through a ps2 connector to the board...this interface is controlled by 8742..how do i obtain the keys pressed at 8051?
Why would you need the 8742? It should be easy to connect PS/2 to the 8051 directly. The protocol should be well documented, just google it.
It is very well documented. It just needs a little bit of common sense use of Google to find plenty of good projects that interface with a PS/2 keyboard.
There again, the common sense approach would surely have been to use Google first - Instead of posting on the Keil forum.
u think i havnt done that???i've googld on how to interface 8742 to c51...didnt find anything useful..hence posted here...
"u think i havnt done that???"
Well ... I just did a search and the TOP of the list was an Intel sourced PDF which details the pinout and timing. That should surely be a good start.
View all questions in Keil forum