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Digital Electronics - Engineering

Q1:

The inputs to a 3 bit binary adder are 1112 and 1102. The output will be

A 101

B 1101

C 1111

D 1110

ANS:B - 1101

Rules for binary addition. 0 + 0 = 0 0 + 1 = 1 + 0 = 1 1 + 1 = 10 i.e., 1 + 1 equals 0 with a carry of 1 to next higher column. 1 + 1 + 1 = 11 i.e., 1 + 1 + 1 equals 1 with a carry of 1 to next higher column.