keypad

i need to implement a keypad for my proj and i've noticed this webside tutorial 9 inside had mentioned about how to read the HEX keypad.here are some of my doubt regarding it.

1.i only have few push button so is this program appliable for me?
2.how to connect those push button to make it as keypad.if i use these push button to construct as keypad then do i need to make any changes to the program?i means tutorial 9.is there any schematic diagram for better understanding...

hope can hear from u asap...thanks lot

Hi louislu,

After a struggle, i found the page you refer to.


1.i only have few push button so is this program appliable for me?
You will need a keypad of 4 buttons by 4 buttons to reproduce the full
16 (hex) characters

2.how to connect those push button to make it as keypad.if i use these
push button to construct as keypad then do i need to make any changes to
the program?i means tutorial 9.is there any schematic diagram for better
understanding...

unclear.

John