I Agree with Peter, many are asking for a completed project. As an example, see the topic "drive 4-digit display with a keypad" by David Vine. What is he really asking? Do we know if he has experience with 8052 assembly language? NO, we don't. Questions of this kind are not specific enough to answer in a forum. It's true, I think, we all like to help, but first the question has to be CLEAR and SPECIFIC, AND it has to be clear that the person that asks the question has already done something him (or her =) ) self to come to a solution.

Dave, I hope you understand what we are trying to say :)

Henk