Matrix keyboard interfacing

we are interfacing 3x4 matrix keyboard and interfacing it with port 1 of P89C51RD2 microcontroller. We are connecting column to P1.0 to P1.3 and row to P1.4 to P1.6. could anybody have code in C
Matrix keyboard interfacing

we are interfacing 3x4 matrix keyboard and interfacing it with port 1 of P89C51RD2 microcontroller. We are connecting column to P1.0 to P1.3 and row to P1.4 to P1.6. could anybody have code in C
Need help on Keyboard 5x4 Matrix

Hi... I need a C code for Keyboard 5x4 Matrix interfacing with 89C52. I have tried but cant control debouncing. If anyone could help me, I 'll be thank ful.
Need help on Keyboard 5x4 Matrix

Hi... I need a C code for Keyboard 5x4 Matrix interfacing with 89C52. I have tried but cant control debouncing. If anyone could help me, I 'll be thank ful.
keyboard interfacing

how do i interface a alphanumeric key board with a st10f168 controller in a keil board. thanks