Problem 3 - Design a half subtractor (that computes the difference between two binary digits). Take input variables as A & B. Output functions are Difference & Borrow. A 2-variable K-map is given below for your reference. (35 pts)
Problem 4 - Write the truth table and draw the K-map of a full adder (that adds three bits). Input variables are A, B, C. Output functions are sum and Carry. A 3-variable K-map is given below for your reference. (30 pts)
AB 0 0 0
1 1
BC 00 01 0 0 1
11 10 3 2
1
2
3
4
5
6