Digital Logic Circuits Set 2

Computer Science Engineering (CSE)

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This set of Digital Logic Circuits DLC Multiple Choice Questions & Answers (MCQs) focuses on Digital Logic Circuits Set 2

Q1 | Diode–transistor logic (DTL) is the direct ancestor of                            
  • register-transistor logic
  • transistor–transistor logic
  • high threshold logic
  • emitter coupled logic
Answer: transistor–transistor logic
Q2 | In DTL logic gating function is performed by                        
  • diode
  • transistor
  • inductor
  • capacitor
Answer: diode
Q3 | In DTL amplifying function is performed by                        
  • diode
  • transistor
  • inductor
  • capacitor
Answer: transistor
Q4 | How many stages a DTL consist of?
  • 2
  • 3
  • 4
  • 5
Answer: 3
Q5 | The full form of CTDL is                        
  • complemented transistor diode logic
  • complemented transistor direct logic
  • complementary transistor diode logic
  • complementary transistor direct logic
Answer: complemented transistor diode logic
Q6 | The DTL propagation delay is relatively                        
  • large
  • small
  • moderate
  • negligible
Answer: large
Q7 | The way to speed up DTL is to add an across intermediate resister is                        
  • small “speed-up” capacitor
  • large “speed-up” capacitor
  • small “speed-up” transistor
  • large ” speed-up” transistor
Answer: small “speed-up” capacitor
Q8 | The process to avoid saturating the switching transistor is performed by                        
  • baker clamp
  • james r. biard
  • chris brown
  • totem-pole
Answer: baker clamp
Q9 | A major advantage of DTL over the earlier resistor–transistor logic is the                        
  • increased fan out
  • increased fan in
  • decreased fan out
  • decreased fan in
Answer: increased fan in
Q10 | To increase fan-out of the gate in DTL                        
  • an additional capacitor may be used
  • an additional resister may be used
  • an additional transistor and diode may be used
  • only an additional diode may be used
Answer: an additional transistor and diode may be used
Q11 | A disadvantage of DTL is                        
  • the input transistor to the resister
  • the input resister to the transistor
  • the increased fan-in
  • the increased fan-out
Answer: the input resister to the transistor
Q12 | Compatibility refers to                          
  • the output of a circuit should match with the input of another circuit
  • the output of a circuit should match with the input of the same circuit
  • the input of a circuit should match with the output of another circuit
  • the input of a circuit should match with the output of same circuit
Answer: the output of a circuit should match with the input of another circuit
Q13 | The method of connecting a driving device to a loading device is known as                        
  • compatibility
  • interface
  • sourcing
  • sinking
Answer: interface
Q14 | The first CML logic was introduced by General Electric in                        
  • 1960
  • 1981
  • 1961
  • 1990
Answer: 1961
Q15 | Schottky families prevent the saturating using                        
  • transistors
  • schottky transistors
  • diodes
  • schottky diodes
Answer: schottky diodes
Q16 | The basic idea of basic CML circuit came from an                        
  • inverter
  • buffer
  • transistor
  • both inverter and buffer
Answer: both inverter and buffer
Q17 | The full form of MECL is                        
  • mono emitter coupled logic
  • motorola emitter coupled logic
  • motorola emitter capacitor logic
  • both mono emitter and motorola coupled logic
Answer: motorola emitter coupled logic
Q18 | Motorola has offered MECL circuits in logic families.
  • 3
  • 4
  • 5
  • 6
Answer: 5
Q19 | The latest entrant to the ECL family is                        
  • ecl 10k
  • ecl 100k
  • ecl 1000k
  • ecl 10000k
Answer: ecl 100k
Q20 | All input of NOR as low produces result as                        
  • low
  • mid
  • high
  • high impedance
Answer: high
Q21 | In RTL NOR gate, the output is at logic 1 only when all the inputs are at                        
  • logic 0
  • logic 1
  • +10v
  • floating
Answer: logic 0
Q22 | The full form of CMOS is                          
  • capacitive metal oxide semiconductor
  • capacitive metallic oxide semiconductor
  • complementary metal oxide semiconductor
  • complemented metal oxide semiconductor
Answer: complementary metal oxide semiconductor
Q23 | The full form of COS-MOS is                          
  • complementary symmetry metal oxide semiconductor
  • complementary systematic metal oxide semiconductor
  • capacitive symmetry metal oxide semiconductor
  • complemented systematic metal oxide semiconductor
Answer: complementary symmetry metal oxide semiconductor
Q24 | CMOS is also sometimes referred to as                          
  • capacitive metal oxide semiconductor
  • capacitive symmetry metal oxide semiconductor
  • complementary symmetry metal oxide semiconductor
  • complemented symmetry metal oxide semiconductor
Answer: complementary symmetry metal oxide semiconductor
Q25 | CMOS technology is used in                          
  • inverter
  • microprocessor
  • digital logic
  • both microprocessor and digital logic
Answer: both microprocessor and digital logic
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