Question: Design the circuit in problem for a twos complement transfer.
Problem: There are two four-bit registers, A and B, built out of SR flip-flops. There is a control signal C. The following operations are needed:
- If C = 0, send contents of A to B.
- If C = 1, send ones complement of contents of A to B. Draw the circuit to perform these functions:
(a) In parallel mode.
(b) In serial mode.