Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. In the decimal numbering system, what is the MSD?
a. the middle digit of a stream of numbers
b. the digit to the right of the decimal point
c. the last digit on the right
d. the digit with the most weight
Q. Which of the following statements does NOT describe an advantage of digital technology?
a. the values may vary over a continuous range.
b. the circuits are less affected by noise.
c. the operation can be programmed.
d. information storage is easy.
Q. The generic array logic (GAL) device is ________.
a. one-time programmable
b. reprogrammable
c. a cmos device
d. reprogrammable and a cmos device
Q. The range of voltages between VL(max) and VH(min) are ________.
a. unknown
b. unnecessary
c. unacceptable
d. between 2 v and 5 v
Q. What is a digital-to-analog converter?
a. it takes the digital information from an audio cd and converts it to a usable form.
b. it allows the use of cheaper analog techniques, which are always simpler.
c. it stores digital data on a hard drive.
d. it converts direct current to alternating current.
Q. What are the symbols used to represent digits in the binary number system?
a. 0,1
b. 0,1,2
c. 0 through 8
d. 1,2
Q. A full subtracter circuit requires ________.
a. two inputs and two outputs
b. two inputs and three outputs
c. three inputs and one output
d. three inputs and two outputs
Q. The output of an AND gate is LOW ________.
a. all the time
b. when any input is low
c. when any input is high
d. when all inputs are high
Q. Parallel format means that:
a. each digital signal has its own conductor.
b. several digital signals are sent on each conductor.
c. both binary and hexadecimal can be used.
d. no clock is neede
Q. A decoder converts ________.
a. noncoded information into coded form
b. coded information into noncoded form
c. highs to lows
d. lows to highs
Q. A DAC changes ________.
a. an analog signal into digital data
b. digital data into an analog signal
c. digital data into an amplified signal
d. none of the above
Q. The output of a NOT gate is HIGH when ________.
a. the input is low
b. the input is high
c. the input changes from low to high
d. voltage is removed from the gate
Q. The output of an OR gate is LOW when ________.
a. all inputs are low
b. any input is low
c. any input is high
d. all inputs are high