8051 Keypad peripheral

Anyone knows of a keypad peripheral for keil? I'm trying to emulate the hardware environment, and it will be very helpful to use one...
8051 Keypad peripheral

Anyone knows of a keypad peripheral for keil? I'm trying to emulate the hardware environment, and it will be very helpful to use one...
Keypad problem

I use ATMEL 89c51 microcontroller with keypad 4x4. My problems is that my 1st row contain 1 2 3 A it display 1 2 3 A for every row i checked the code on proteus8 its working fine and also on 8051...
Keypad problem

I use ATMEL 89c51 microcontroller with keypad 4x4. My problems is that my 1st row contain 1 2 3 A it display 1 2 3 A for every row i checked the code on proteus8 its working fine and also on 8051...
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...