Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. A is a circuit with only one output but can have multiple inputs.
a. logic gate
b. truth table
c. binary circuit
d. boolean circuit
Q. Each product term of a group, w’.x.y’ and w.y, represents the in that group.
a. input
b. pos
c. sum-of-minterms
d. sum of maxterms
Q. It should be kept in mind that don’t care terms should be used along with the terms that are present in
a. minterms
b. expressions
c. k-map
d. latches
Q. Using the transformation method you can realize any POS realization of OR-AND with only.
a. xor
b. nand
c. and
d. nor
Q. In case of XOR/XNOR simplification we have to look for the following
a. diagonal adjacencies
b. offset adjacencies
c. straight adjacencies
d. both diagonal and offset adjencies
Q. In which of the following gates the output is 1 if and only if at least one input is 1?
a. and
b. nor
c. nand
d. or
Q. The time required for a gate or inverter to change its state is called
a. rise time
b. decay time
c. propagation time
d. charging time
Q. The number of full and half adders are required to add 16-bit number is
a. 8 half adders, 8 full adders
b. 1 half adders, 15 full adders
c. 16 half adders, 0 full adders
d. 4 half adders, 12 full adders
Q. An OR gate can be imagined as
a. switches connected in series
b. switches connected in parallel
c. mos transistor connected in series
d. bjt transistor connected in series
Q. In parts of the processor, adders are used to calculate
a. addresses
b. table indices
c. increment and decrement operators
d. all of the mentioned
Q. How many full adders are required to construct an m-bit parallel adder?
a. m/2
b. m
c. m-1
d. m+1
Q. In which operation carry is obtained?
a. subtraction
b. addition
c. multiplication
d. both addition and subtraction
Q. If A and B are the inputs of a half adder, the sum is given by
a. a and b
b. a or b
c. a xor b
d. a ex-nor b
Q. If A and B are the inputs of a half adder, the carry is given by
a. a and b
b. a or b
c. a xor b
d. a ex-nor b