Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. 6 MULTIPLEXER
a. to apply vcc
b. to connect ground
c. to active the entire chip
d. to active one half of the chip
Q. One multiplexer can take the place of
a. several ssi logic gates
b. combinational logic circuits
c. several ex-nor gates
d. several ssi logic gates or combinational logic circuits
Q. A digital multiplexer is a combinational circuit that selects
a. one digital information from several sources and transmits the selected one
b. many digital information and convert them into one
c. many decimal inputs and transmits the selected information
d. many decimal outputs and accepts the selected information
Q. A basic multiplexer principle can be demonstrated through the use of a
a. single-pole relay
b. dpdt switch
c. rotary switch
d. linear stepper
Q. How many NOT gates are required for the construction of a 4-to-1 multiplexer?
a. 3
b. 4
c. 2
d. 5
Q. In the given 4-to-1 multiplexer, if c1 = 0 and c0 = 1 then the output M is
a. x0
b. x1
c. x2
d. x3
Q. The word demultiplex means
a. one into many
b. many into one
c. distributor
d. one into many as well as distributor
Q. Why is a demultiplexer called a data distributor?
a. the input will be distributed to one of the outputs
b. one of the inputs will be selected for the output
c. the output will be distributed to one of the inputs
d. single input to single output
Q. Most demultiplexers facilitate which type of conversion?
a. decimal-to-hexadecimal
b. single input, multiple outputs
c. ac to dc
d. odd parity to even parity
Q. In a multiplexer the output depends on its
a. data inputs
b. select inputs
c. select outputs
d. enable pin