# Tiny Tapeout Template Project
2-bit full adder
IN0: 1 bit carry in
IN1: 1s bit of first pair
IN2: 1s bit of second pair
IN3: 2s bit of first pair
IN4: 2s bit of second pair
OUT0: 1s bit of output
OUT1: 2s bit of output
OUT2: carry output
in practice, it doesn't matter whether you consider IN0 and IN3 to be a pair or IN1
and IN3 to be a pair, or anything else, as long as a pair is different bits, that is,
each pair contains one 1s bit and one 2s bit, and a 1s bit input is left out as carry Carry in
A1
B1
A2
B2
1s output
2s output
carry out