Transistor Transistor Logic(TTL) MCQ’s

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This set of Digital Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Transistor Transistor Logic(TTL)”.

1. TTL is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by ____________
a) Resistors
b) Bipolar junction transistors
c) One transistor
d) Resistors and transistors respectively

2. TTL was invented in 1961 by ____________
a) Baker clamp
b) James L. Buie
c) Chris Brown
d) Frank Wanlass

3. 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

4. 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

5. TTL inputs are the emitters of a ____________
a) Transistor-transistor logic
b) Multiple-emitter transistor
c) Resistor-transistor logic
d) Diode-transistor logic

6. Standard TTL circuits operate with a __ volt power supply.
a) 2
b) 4
c) 5
d) 3

7. The _______ ancestor to the first personal computers.
a) PARAM 1
b) SATYAM 1
c) KENBAK 1
d) MITS Altair

8. TTL is a ____________
a) Current sinking
b) Current sourcing
c) Voltage sinking
d) Voltage sourcing

9. TTL devices consume substantially ______ power than equivalent CMOS devices at rest.
a) Less
b) More
c) Equal
d) Very High

10. The speed of ______ circuits is limited by the tendency of common emitter circuits to go into saturation.
a) TTL
b) ECL
c) RTL
d) DTL

11. A TTL gate may operate inadvertently as an ____________
a) Digital amplifier
b) Analog amplifier
c) Inverter
d) Regulator

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