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This set of Digital Logic Circuits DLC Multiple Choice Questions & Answers (MCQs) focuses on Digital Logic Circuits Set 3
Q1 | Two important characteristics of CMOS devices are
- high noise immunity
- low static power consumption
- high resistivity
- both high noise immunity and low static power consumption
Q2 | CMOS behaves as a/an
- adder
- subtractor
- inverter
- comparator
Q3 | An important characteristic of a CMOS circuit is the
- noise immunity
- duality
- symmetricity
- noise margin
Q4 | CMOS logic dissipates power than NMOS logic circuits.
- more
- less
- equal
- very high
Q5 | Semiconductors are made of
- ge and si
- si and pb
- ge and pb
- pb and au
Q6 | Which chip were the first RTC and CMOS RAM chip to be used in early IBM computers, capable of storing a total of 64 bytes?
- the samsung 146818
- the samsung 146819
- the motorola 146818
- the motorola 146819
Q7 | The full form of ECL is
- emitter-collector logic
- emitter-complementary logic
- emitter-coupled logic
- emitter-cored logic
Q8 | Which logic is the fastest of all the logic families?
- ttl
- ecl
- htl
- dtl
Q9 | Sometimes ECL can also be named as
- eel
- cel
- cml
- ccl
Q10 | In an ECL the output is taken from
- emitter
- base
- collector
- junction of emitter and base
Q11 | The ECL behaves as
- not gate
- nor gate
- nand gate
- and gate
Q12 | In ECL the fanout capability is
- high
- low
- zero
- sometimes high and sometimes low
Q13 | ECL’s major disadvantage is that
- it requires more power
- it’s fanout capability is high
- it creates more noise
- it is slow
Q14 | The full form of SCFL is
- source-collector logic
- source-coupled logic
- source-complementary logic
- source cored logic
Q15 | The equivalent of emitter-coupled logic made out of FETs is called
- cml
- scfl
- fecl
- efcl
Q16 | ECL was invented in by
- 1956, baker clamp
- 1976, james r. biard
- 1956, hannon s. yourke
- 1976, yourke
Q17 | At the time of invention, an ECL was called as
- source-coupled logic
- current mode logic
- current-steering logic
- emitter-coupled logic
Q18 | The ECL circuits usually operates with
- negative voltage
- positive voltage
- grounded voltage
- high voltage
Q19 | Low-voltage positive emitter-coupled logic (LVPECL) is a power optimized version of
- ecl
- vecl
- pecl
- lecl
Q20 | Transistor–transistor logic (TTL) is a class of digital circuits built from
- jfet only
- bipolar junction transistors (bjt)
- resistors
- bipolar junction transistors (bjt) and resistors
Q21 | TTL was invented in 1961 by
- baker clamp
- james l. buie
- chris brown
- frank wanlass
Q22 | The full form of TCTL is
- transistor-coupled transistor logic
- transistor-capacitor transistor logic
- transistor-complemented transistor logic
- transistor-complementary transistor logic
Q23 | The ancestor to the first personal computers.
- param 1
- satyam 1
- kenbak 1
- mits altair
Q24 | TTL inputs are the emitters of a
- transistor-transistor logic
- multiple-emitter transistor
- resistor-transistor logic
- diode-transistor logic
Q25 | TTL is a
- current sinking
- current sourcing
- voltage sinking
- voltage sourcing