Top 350+ Solved Digital Electronics MCQ Questions Answer

a. accept a carry bit from a present stage

b. accept a carry bit from a next stage

c. accept a carry bit from a previous stage

d. accept a carry bit from the following stages

a. half adder has two inputs while full adder has four inputs

b. half adder has one output while full adder has two outputs

c. half adder has two inputs while full adder has three inputs

d. all of the mentioned

a. a and b and c

b. a or b and c

c. a xor b xor c

d. a or b or c

a. a and b or (a or b) and c

b. a or b or (a and b) c

c. (a and b) or (a and b)c

d. a xor b xor (a xor b) and c

a. 1, 2, 2

b. 2, 1, 2

c. 3, 1, 2

d. 4, 0, 1

a. 2 bits

b. 3 bits

c. 4 bits

d. 5 bits

a. 1

b. 2

c. 3

d. 4

a. 0

b. 1

c. a

d. b

a. a xor b

b. a and b

c. a or b

d. a exnor b

a. a and b’

b. a’ and b

c. a or b

d. a and b

a. their corresponding bits of input

b. its outputs

c. its inputs

d. borrow bits

a. 2 bits

b. 3 bits

c. 4 bits

d. 8 bits

a. half adder

b. full adder

c. half subtractor

d. decoder

a. two xor and an or gates

b. two half subtractors and an or gate

c. two multiplexers and an and gate

d. two comparators and an and gate

a. because of the same input

b. because of the same output

c. it behaves like a not gate

d. it behaves like a and gate