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:

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.

SUM

CARRY

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