Bitwise operators

Build a circuit with two 3-bit inputs that computes:

• out_or_bitwise — the bitwise OR of a and b
• out_or_logical — the logical OR of a and b (1-bit result)
• out_not — a 6-bit output containing the inverse of b in the upper half (bits 5..3) and the inverse of a in the lower half (bits 2..0)