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Multiple Choice Quiz
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1
When switch S is closed, the LED is ___ because point A in the circuit is at a ___ logic level.
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A)Lit, LOW
B)Lit, HIGH
C)Not lit, LOW
D)Not lit, HIGH
2
Two devices that might be used to create isolation between digital input circuitry and higher voltage and/or noisy output circuitry are ___ and ___.
A)Relays and optoisolators
B)Gates and D-to-A isolators
C)A-to-D converters and relays
D)Isolation BBRs and logic gates
3
Component R1 is best called a(n) ___ resistor based on its job in the circuit.
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A)Anchor
B)Limiting
C)Pull-down
D)Pull-up
4
In digital IC specifications, the number of inputs that can be driven by a gate's output is called ___.
A)Target drive
B)Propagation speed
C)Virgule push
D)Fan-out
5
The ___ series of CMOS ICs is favored for many new digital designs because it has superior drive capabilities, low power consumption, excellent speed, and good noise immunity.
A)7400
B)TTL
C)FACT
D)None of the above
6
If the input to the inverter goes LOW, the base of the NPN transistor goes ___ (HIGH, LOW) causing the transistor to ___ (conduct, not conduct) and the LED to ___ (light, not light).
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A)LOW, not conduct, not light
B)HIGH, conduct, not light
C)HIGH, conduct, light
D)HIGH, not conduct, not light
7
An electromechanical device that might be chosen by a designer for an application where a shaft must have an exact angular position would be a(n) ___.
A)DC motor
B)AC motor
C)Solenoid
D)Stepper motor
8
Logic gates from the ___ family of ICs have better noise immunity.
A)CMOS
B)DVD
C)RTL
D)TTL
9
The design of interconnections between circuits that shift the levels of voltage and current to make them compatible is called ___.
A)Analog rectifying
B)Converting
C)Drive mapping
D)Interfacing
10
The _____ family of ICs has the least input loading.
A)ABC
B)CMOS
C)TTL
D)RTL





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