Top 350+ Solved Digital Logic Circuits (DLC) MCQ Questions Answer
Q. Let A and B is the input of a subtractor then the output will be
a. a xor b
b. a and b
c. a or b
d. a exnor b
Q. Let A and B is the input of a subtractor then the borrow will be
a. a and b’
b. a’ and b
c. a or b
d. a and b
Q. What does minuend and subtrahend denotes in a subtractor?
a. their corresponding bits of input
b. its outputs
c. its inputs
d. borrow bits
Q. The full subtractor can be implemented using
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
Q. The output of a subtractor is given by (if A, B and X are the inputs).
a. a and b xor x
b. a xor b xor x
c. a or b nor x
d. a nor b xor x
Q. The output of a full subtractor is same as
a. half adder
b. full adder
c. half subtractor
d. decoder
Q. A register is defined as
a. the group of latches for storing one bit of information
b. the group of latches for storing n-bit of information
c. the group of flip-flops suitable for storing one bit of information
d. the group of flip-flops suitable for storing binary information
Q. The main difference between a register and a counter is
a. a register has no specific sequence of states
b. a counter has no specific sequence of states
c. a register has capability to store one bit of information but counter has n-bit
d. a register counts data
Q. Registers capable of shifting in one direction is
a. universal shift register
b. unidirectional shift register
c. unipolar shift register
d. unique shift register