??? 08/29/04 08:02 Read: times |
#76556 - RE: matrix keyboard interfacing with 8051 Responding to: ???'s previous message |
Your scheme seems wrong. Why use 74HC573 on both columns and rows? On one side, there should be buffers, not latches.
Thanks Ijaz for pointing out the mistake. Actually In hurry that has happended. --- I typed latches 74HC573 and buffers 74HC573 should be read as --- Latches 74HC573 and buffers 74HC541. Regards, Prahlad Purohit |