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*The adder–subtractor circuit of Figure has the following values for input select S and data inputs A and B:
| S | A | B |
(a) | 0 | 0111 | 0111 |
(b) | 1 | 0100 | 0111 |
(c) | 1 | 1101 | 1010 |
(d) | 0 | 0111 | 1010 |
(e) | 1 | 0001 | 1000 |
Figure Adder-Subtractor Circuit
Determine, in each case, the values of the outputs S3, S2, S1, S0, and C4.
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