Quick 4x4 keypad matrix question

[Demon]

Yup, I'd start with using the same resistor values and logic as Bruce and get that working first. Then I'd tweak the code to my liking/needs and changing hardware.

Archangel is right. Bruce adds little comments like this one for a reason:

The original prototype was designed using the PIC16F628, but the code shown below can easily be modified to work on any PIC with sufficient I/O capacity for the keypad interface, and the two lines required for the serial output-pin, and baud-rate selection pin.

CMCON is the comparator mode selection register. Loading a value of 7 into CMCON sets-up the PortA I/O-pins as digital, while turning OFF the comparators.

If you prefer to use another PIC that has A/D on PortA, simply replace CMCON = 7 with ADCON1 = 7 to turn OFF the A/D peripheral, and set PortA to digital.