1. . A binary half adder is a __________ bit adder.
(A) 1
(B) 2
(C) 3
(D) None
2. . A half adder consist of ____________ gates.
(A) OR & AND
(B) XOR & OR
(C) XOR & AND
(D) None
3. . A full adder has ____________ inputs.
(A) 2
(B) 3
(C) 4
(D) None
4. . The 1’s complement of 001011 is ___________.
(A) 110100
(B) 000111
(C) 110011
(D) None
5. . A 4 bit adder/subtractor circuit used a __________ gate with each full adder.
(A) XOR
(B) OR
(C) AND
(D) None
6. . D = (A ⊕ B) ⊕ Bin is the Boolean expression of the __________ circuit.
(A) Half adder
(B) Half subtractor
(C) Full adder
(D) Full subtractor
7. . In binary subtraction (10110 – 11010), the 10110 is __________.
(A) Subtrahend
(B) None
(C) Subtract
(D) Minued
8. . Sum & Carry are the outputs of __________.
(A) Full subtractor
(B) Half subtractor
(C) None
(D) Half adder
9. . The circuit that adds two binary word of 4 bit is called __________.
(A) 4 bit adder
(B) Adder/subtractor
(C) 4 bit subtractor
(D) None
10. . If three inputs of full subtractor are 1 then output D = __________ and Bout = __________.
(A) 1, 1
(B) 0, 1
(C) 1, 0
(D) None
11. . Cout = A·B + Cin(A ⊕ B) is the Boolean expression of __________.
(A) Full subtractor
(B) Half adder
(C) Full adder
(D) Half subtractor