problem in keypad of 8051

i m using micro-controller p89v51rd2 in that i m trying program of keypad which out put show on 7 segment but in that when i m hold the key than out put will be show but after relished the key out put...
problem in keypad of 8051

i m using micro-controller p89v51rd2 in that i m trying program of keypad which out put show on 7 segment but in that when i m hold the key than out put will be show but after relished the key out put...
Using an 8051/8052 microcontroller to decode a 4x4 matrix keypad

I want to know how to use a lookup table to decode a 4x4 matrix keypad e.g a Grayhill 96 series keypad in 8051/52 assembly language.Please, may you send me example assembly code used in this decoding...
Using an 8051/8052 microcontroller to decode a 4x4 matrix keypad

I want to know how to use a lookup table to decode a 4x4 matrix keypad e.g a Grayhill 96 series keypad in 8051/52 assembly language.Please, may you send me example assembly code used in this decoding...
8051 Peripheral Simulation

Hello, I use Keil uvision evaluation tool to work with both ARM and 8051 processors. My problem is that while working with 8051, I am not able to simulate the on chipe peripherals. In fact, while...