Top 350+ Solved Digital Logic Circuits (DLC) MCQ Questions Answer
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. Transistor–transistor logic (TTL) is a class of digital circuits built from
a. jfet only
b. bipolar junction transistors (bjt)
c. resistors
d. bipolar junction transistors (bjt) and resistors
Q. The full form of TCTL is
a. transistor-coupled transistor logic
b. transistor-capacitor transistor logic
c. transistor-complemented transistor logic
d. transistor-complementary transistor logic
Q. TTL inputs are the emitters of a
a. transistor-transistor logic
b. multiple-emitter transistor
c. resistor-transistor logic
d. diode-transistor logic
Q. A TTL gate may operate inadvertently as an
a. digital amplifier
b. analog amplifier
c. inverter
d. regulator
Q. Which statement below best describes a Karnaugh map?
a. it is simply a rearranged truth table
b. the karnaugh map eliminates the need for using nand and nor gates
c. variable complements can be eliminated by using karnaugh maps
d. a karnaugh map can be used to replace boolean rules
Q. Which of the examples below expresses the commutative law of multiplication?
a. a + b = b + a
b. a • b = b + a
c. a • (b • c) = (a • b) • c
d. a • b = b • a
Q. The Boolean expression Y = (AB)’ is logically equivalent to what single gate?
a. nand
b. nor
c. and
d. or