31. (Continued)
Since the final column results in all 1's, the expression
A+AB = A is proved equivalent in all cases.
a. Complete the following truth table:
A
B
A+B
A(A+B)
A(A+B) =A
0
0
0
0
0
1
1
0
1
0
1
1
1
1
1
1
b. The expression A(A+B) = A ______________
(is/is not)
equivalent.
32. Construct a truth table which will add two binary digits. Label
the inputs E and F. Show both the SUM and the CARRY
outputs.
INPUTS
OUTPUTS
SUM
CARRY
1-21
IT 0346
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