Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. The full form of CML is
a. complementary mode logic
b. current mode logic
c. collector mode logic
d. collector mixed logic
Q. In an ECL the output is taken from
a. emitter
b. base
c. collector
d. junction of emitter and base
Q. ECL’s major disadvantage is that
a. it requires more power
b. it’s fanout capability is high
c. it creates more noise
d. it is slow
Q. The full form of SCFL is
a. source-collector logic
b. source-coupled logic
c. source-complementary logic
d. source cored logic
Q. The equivalent of emitter-coupled logic made out of FETs is called
a. cml
b. scfl
c. fecl
d. efcl
Q. ECL was invented in by
a. 1956, baker clamp
b. 1976, james r. biard
c. 1956, hannon s. yourke
d. 1976, yourke
Q. At the time of invention, an ECL was called as
a. source-coupled logic
b. current mode logic
c. current-steering logic
d. emitter-coupled logic
Q. The ECL circuits usually operates with
a. negative voltage
b. positive voltage
c. grounded voltage
d. high voltage
Q. Low-voltage positive emitter-coupled logic (LVPECL) is a power optimized version of
a. ecl
b. vecl
c. pecl
d. lecl
Q. Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.
a. using a as the control, when a = 0, x is the same as b. when a = 1, x is the same as b.
b. using a as the control, when a = 0, x is the same as b. when a = 1, x is the inverse of b.
c. using a as the control, when a = 0, x is the inverse of b. when a = 1, x is the same as b.
d. using a as the control, when a = 0, x is the inverse of b. when a = 1, x is the inverse of b.
Q. In a flash analog-to-digital converter, the output of each comparator is connected to an input of a ________.
a. decoder
b. priority encoder
c. multiplexer
d. demultiplexer