Top 550+ Solved Digital Principles and System Design MCQ Questions Answer
Q. The discrepancy of 0 output due to all inputs being 0 or D0, being 0 is resolved by using additional input known as
a. enable
b. disable
c. strobe
d. clock
Q. If two inputs are active on a priority encoder, which will be coded on the output?
a. the higher value
b. the lower value
c. neither of the inputs
d. both of the inputs
Q. What is a multiplexer?
a. it is a type of decoder which decodes several inputs and gives one output
b. a multiplexer is a device which converts many signals into one
c. it takes one input and results into many output
d. it is a type of encoder which decodes several inputs and gives one output
Q. Which combinational circuit is renowned for selecting a single input from multiple inputs & directing the binary information to output line?
a. data selector
b. data distributor
c. both data selector and data distributor
d. demultiplexer
Q. It is possible for an enable or strobe input to undergo an expansion of two or more MUX ICs to the digital multiplexer with the proficiency of large number of
a. inputs
b. outputs
c. selection lines
d. enable lines
Q. Which is the major functioning responsibility of the multiplexing combinational circuit?
a. decoding the binary information
b. generation of all minterms in an output function with or-gate
c. generation of selected path between multiple sources and a single destination
d. encoding of binary information
Q. What is the function of an enable input on a multiplexer chip?
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. In a multiplexer, the selection of a particular input line is controlled by
a. data controller
b. selected lines
c. logic gates
d. both data controller and selected lines
Q. How many select lines would be required for an 8- line-to-1-line multiplexer?
a. 2
b. 4
c. 8
d. 3
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