Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. What is a trigger pulse?
a. a pulse that starts a cycle of operation
b. a pulse that reverses the cycle of operation
c. a pulse that prevents a cycle of operation
d. a pulse that enhances a cycle of operation
Q. The circuits of NOR based S-R latch classified as asynchronous sequential circuits, why?
a. because of inverted outputs
b. because of triggering functionality
c. because of cross-coupled connection
d. because of inverted outputs & triggering functionality
Q. Which are easier to design?
a. clocked circuits
b. asynchronous sequential circuits
c. clocked circuits with buffer
d. asynchronous sequential circuits with buffers
Q. is used to drive high capacitance load.
a. single polar capability
b. bipolar capability
c. tripolar capability
d. bi and tri polar capability
Q. Non inverting dynamic register storage cell consists of transistors for nMOS and for CMOS.
a. six, eight
b. eight, six
c. five, six
d. six, five
Q. Register cell consists of
a. inverter
b. pass transistor
c. inverter & pass transistor
d. none of the mentioned
Q. In a four bit dynamic shift register basic nMOS transistor or inverters are connected in
a. series
b. cascade
c. parallel
d. series and parallel
Q. In four bit dynamic shift register output is obtained
a. parallel output at inverters 1, 3, 5, 7
b. parallel output at inverters 1, 5, 8
c. parallel output at all inverters
d. parallel output at inverter 2, 4, 6, 8
Q. Output values of Moore type FSM are determined by its
a. input values
b. output values
c. clock input
d. current state
Q. A 74HC195 4-bit parallel access shift register can be used for
a. serial in/serial out operation
b. serial in/parallel out operation
c. parallel in/serial out operation
d. all of the mentioned
Q. What is the function of a buffer circuit?
a. to provide an output that is inverted from that on the input
b. to provide an output that is equal to its input
c. to clean up the input
d. to clean up the output
Q. What is the preset condition for a ring shift counter?
a. all ffs set to 1
b. all ffs cleared to 0
c. a single 0, the rest 1
d. a single 1, the rest 0
Q. Another way to connect devices to a shared data bus is to use a
a. circulating gate
b. transceiver
c. bidirectional encoder
d. strobed latch
Q. The full form of SIPO is
a. serial-in parallel-out
b. parallel-in serial-out
c. serial-in serial-out
d. serial-in peripheral-out