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This is a program to emulate the 74C922 16-key encoder. The goal is to create an *almost* drop-in compatible. Note however, that the attiny2313 is a 20-pin device, and the power and ground pins are not in the same locations. THIS IS NOT DIRECTLY COMPATIBLE WITH EXISTING DESIGNS!!! For those who are making new designs, or cannot source an original 74C922, then this may work for you. You WILL have to make a custom adapter if replacing an existing chip. The aim is to provide the same features as the original chip, so using this replacement in a new design should be the same as using the old one. ~nathan duprey / qwertyboy~