I'm currently working on a weird and interesting hack on my old Pentium II. and I wanted to develop some form of keypad which would consist four buttons. When the user presses a button the button number would be displayed on the screen.
I was inspired by the Game Show system however i am doing this project as part of some form of 'home automation' system
Any suggestions or google links on how i could complete this part of my project would be much appreciated.