Top 350+ Solved Digital Electronics and Logic Design MCQ Questions Answer
Q. A comparison between serial and parallel adder reveals that serial order
a. is slower
b. is faster
c. operates at the same speed as parallel adder
d. is more complicate d
Q. If a logic gates has four inputs, then total number of possible input combinations is
a. 4
b. 8
c. 16
d. 32
Q. If a logic gates has four inputs, then total number of possible input combinations is
a. input combination at the time
b. input combination and the previous output
c. nput combination at that time and the previous input combination
d. present output and the previous output
Q. A combinational logic circuit which generates a particular binary word or number is
a. decoder
b. multiplexer
c. encoder
d. demultiple xer
Q. Which of the following circuit can be used as parallel to serial converter ?
a. multiplexer
b. demultiplexe r
c. decoder
d. digital counter
Q. In which of the following adder circuits, the carry look ripple delay is eliminated ?
a. half adder
b. full adder
c. parallel adder
d. carry- look- ahead adder
Q. Adders
a. adds 2 bits
b. is called so because a full adder involves two half-adders
c. needs two input and generates two output
d. all of these
Q. Excess-3 code is known as
a. weighted code
b. cyclic redundancy code
c. self- complementi ng code
d. algebraic code.
Q. The selector inputs to an arithmetic-logic unit (ALU) determine the:
a. selection of
b. arithmetic
c. data word
d. clock
Q. What are the two types of basic adder circuits?
a. half adder and
b. half adder
c. asynchronou
d. one\s
Q. The inverter OR-gate and AND gate are called deeision-making elementsbecause they can recognize some input while disregarding others. A gate
a. words,high
b. bytes,low
c. bytes,high
d. character,low
Q. Which one of the following set of gates are best suited for 'parity' checking and 'parity' generation.
a. and, or, notgates
b. ex-nor orex-or gates
c. nand gates
d. norgates