Question

1. Complete the TABLE 1 truth tables on the answer sheet for a one-bit ALU that has 6 inputs: Two operands A0 and BO, Cln0 (the carry-in), control bits F2 FI FO (so, 011 is ADD which means F2 = 0, F1 = 1 FO = 1). The two outputs are: CO (the results of adding/anding/oring two binary digits) and COut0 (the carry out from adding the two binary digits)
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Answer #1

ADD

Cin B0 A0 F2 F1 F0 C0 Cout
0 0 0 0 1 1 0 0
0 0 1 0 1 1 1 0
0 1 0 0 1 1 1 0
0 1 1 0 1 1 0 1
1 0 0 0 1 1 1 0
1 0 1 0 1 1 0 1
1 1 0 0 1 1 0 1
1 1 1 0 1 1 1 1

AND

B0 A0 F2 F1 F0 C0
0 0 1 0 1 0
0 1 1 0 1 0
1 0 1 0 1 0
1 1 1 0 1 1

OR

B0 A0 F2 F1 F0 C0
0 0 0 1 1 0
0 1 0 1 1 1
1 0 0 1 1 1
1 1 0 1 1 1
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