'Radio Shack 49-452 Keypad'
Slightly off topic:
Does/Has anyone interfaced a PIC chip to a Radio Shack Digital Keypad model
# 49-452? The back of the keypad has +/- power connections, 4 possible
address settings, and a Serial Data 1 and 2. Is this true serial data?
Which is input and which is output? Or is the data flow bidrectional?
I want to interface this keypad with a PIC 16c84 to control a home alarm
system. It seems like it would be easier to use this keypad than to create
Any help is greatly appreciated.
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