Top 350+ Solved Digital Electronics and Logic Design MCQ Questions Answer
Q. Which table shows the logical state of a digital circuit output for every possible combination of logical states in the inputs ?
a. function table
b. truth table
c. routing table
d. ascii table
Q. An OR gate can be imagined as
a. switches connected in series
b. switches connected in parallel
c. mostransistors connected in series
d. none of these
Q. Which combination of gates does not allow the implementation of an arbitrary boolean function?
a. or gates and and gates only
b. or gates and exclusive or gate only
c. or gates and not gates only
d. nandgates only
Q. The output of NOR gate is
a. high if all of its inputs are high
b. low if all of its inputs are low
c. high if all of its inputs are low
d. high if only of its inputs is low
Q. A toggle operation cannot be performed using a single
a. nor gate
b. and gate
c. nand gate
d. xor gate
Q. Which table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs ?
a. function table
b. truth table
c. routing table
d. ascii table
Q. How many truth tables can be made from one function table ?
a. one
b. two
c. three
d. any numbers
Q. A combinational circuit is one in which the output depends on the
a. input combination at the time
b. input combination and the previous output
c. input combination at that time and the previous input combination
d. present output and the previous output
Q. The function of a multiplexer is
a. to decode information
b. to select 1 out of n input data sources and to transmit it to single channel
c. to transit data on n lines
d. to perform serial to parallel conversion
Q. For the device shown here, let all D inputs be LOW, both S inputs be HIGH, and the input be LOW. What is the status of the Y output?
a. low
b. high
c. don\t care
d. cannot be determine d