how do i interface a alphanumeric key board with a st10f168 controller in a keil board. thanks
Sounds like you already have got a keyboard. If it's a matrix keyboard, you simply connect it to unused i/o ports of the ST10F168 and write your scanning/debouncing routines (you may need to add pull-up or pull-down resistors). Also have a look at the following thread: http://www.keil.com/forum/docs/thread1397.asp Regards, - Mike