Top 350+ Solved Digital Logic Circuits (DLC) MCQ Questions Answer
Q. Which of the following is not a in-built package in VHDL?
a. std_logic_1164
b. textio
c. standard
d. std
Q. Which of the following can’t have multiple assignments or drivers?
a. std_logic
b. integer
c. std_ulogic
d. bit
Q. Which of the following is a not a characteristics of combinational circuits?
a. the output of combinational circuit depends on present input
b. there is no use of clock signal in combinational circuits
c. the output of combinational circuit depends on previous output
d. there is no storage element in combinational circuit
Q. Which of the following is not a combinational circuit?
a. adder
b. code convertor
c. multiplexer
d. counter
Q. Diode–transistor logic (DTL) is the direct ancestor of
a. register-transistor logic
b. transistor–transistor logic
c. high threshold logic
d. emitter coupled logic
Q. The full form of CTDL is
a. complemented transistor diode logic
b. complemented transistor direct logic
c. complementary transistor diode logic
d. complementary transistor direct logic
Q. The way to speed up DTL is to add an across intermediate resister is
a. small “speed-up” capacitor
b. large “speed-up” capacitor
c. small “speed-up” transistor
d. large ” speed-up” transistor
Q. The process to avoid saturating the switching transistor is performed by
a. baker clamp
b. james r. biard
c. chris brown
d. totem-pole
Q. A major advantage of DTL over the earlier resistor–transistor logic is the
a. increased fan out
b. increased fan in
c. decreased fan out
d. decreased fan in
Q. To increase fan-out of the gate in DTL
a. an additional capacitor may be used
b. an additional resister may be used
c. an additional transistor and diode may be used
d. only an additional diode may be used