Subtractor Circuit

Basic Subtractor Circuit (Rs complement) From Left to right: Sw1 = A1 Sw2 = B1 Sw3 = C0 Sw4 = A2 Sw5 = B2 Minuend: A2 A1 Rs Complement: B2 B1 Add: C0 = 0 Subtract: C0 = 1 WHEN SUBTRACTING DISREGARD MOST SIGNIFICANT BIT (leftmost LED)