PHYS345 Electricity and Electronics

Hint for P9.18

The entire truth table for the full subtractor is

A F Bi   D Bo
0 0 0   0 0
0 1 0   1 1
1 0 0   1 0
1 1 0   0 0
 
0 0 1   1 1
0 1 1   0 1
1 0 1   0 0
1 1 1   1 1


"http://www.physics.udel.edu/~watson/phys345/protected/exercises/hints/P9-8a.html"
Last updated Oct. 30, 1998.
Copyright George Watson, Univ. of Delaware, 1998.