Figure is a 4-bit two's-complement adder/subtractor. We are attempting to subtract 7-3(0111-0011)but keep getting the wrong answer of 8 (1000). Each test node in the circuit is labeled with the logic state observed using a logic probe. Find the two faults in the circuit

Transcribed Image Text:

Figure 0 0 LALE 01101010 Ag By A, B, Ag By A, B, 7483 Cout Cin 1 0 Σε Σ 0 0 - 1 (subtract) - Ο (add) Figure 0 0 LALE 01101010 Ag By A, B, Ag By A, B, 7483 Cout Cin 1 0 Σε Σ 0 0 - 1 (subtract) - Ο (add)

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Figure 14bit twos complement adder sub tractor In the addersub ... View the full answer