Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. The complex programmable logic device contains several PLD blocks and
a. a language compiler
b. and/or arrays
c. global interconnection matrix
d. field-programmable switches
Q. The difference between a PAL & a PLA is
a. pals and plas are the same thing
b. the pla has a programmable or plane and a programmable and plane, while the pal only has a programmable and plane
c. the pal has a programmable or plane and a programmable and plane, while the pla only has a programmable and plane
d. the pal has more possible product terms than the pla
Q. If a PAL has been programmed once
a. its logic capacity is lost
b. its outputs are only active high
c. its outputs are only active low
d. it cannot be reprogrammed
Q. The FPGA refers to
a. first programmable gate array
b. field programmable gate array
c. first program gate array
d. field program gate array
Q. The full form of VLSI is
a. very long single integration
b. very least scale integration
c. very large scale integration
d. very long scale integration
Q. In FPGA, vertical and horizontal directions are separated by
a. a line
b. a channel
c. a strobe
d. a flip-flop
Q. Applications of PLAs are
a. registered pals
b. configurable pals
c. pal programming
d. all of the mentioned
Q. CMOS refers to
a. continuous metal oxide semiconductor
b. complementary metal oxide semiconductor
c. centred metal oxide semiconductor
d. concrete metal oxide semiconductor
Q. Propagation delay is defined as
a. the time taken for the output of a gate to change after the inputs have changed
b. the time taken for the input of a gate to change after the outputs have changed
c. the time taken for the input of a gate to change after the intermediates have changed
d. the time taken for the output of a gate to change after the intermediates have changed
Q. Propagation delay times can be divided as
a. t(plh) and t(lph)
b. t(lph) and t(phl)
c. t(plh) and t(phl)
d. t(hpl) and t(lph)
Q. Power Dissipation in DIC is expressed in
a. watts or kilowatts
b. milliwatts or nanowatts
c. db
d. mdb
Q. Fan-in is defined as
a. the number of outputs connected to gate without any degradation in the voltage levels
b. the number of inputs connected to gate without any degradation in the voltage levels
c. the number of outputs connected to gate with degradation in the voltage levels
d. the number of inputs connected to gate with degradation in the voltage levels
Q. The maximum noise voltage that may appear at the input of a logic gate without changing the logical state of its output is termed as
a. noise margin
b. noise immunity
c. white noise
d. signal to noise ratio
Q. The full form of ECL is
a. emitter-collector logic
b. emitter-complementary logic
c. emitter-coupled logic
d. emitter-cored logic