题目内容

An inverter()

A. performs the NOT operation
B. changes a HIGH to a LOW
C. changes a LOW to a HIGH
D. does all of the above

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The output of an OR gate is HIGH when ()

A. any input is HIGH
B. all inputs are HIGH
C. no inputs are HIGH
D. both answers A and B

When the input to an inverter is HIGH (1), the output is ()

A. HIGH or 1
B. LOW or 1
C. HIGH or 0
D. LOW or 0

FETs usually ().

A. are less sensitive to temperature change than BJTs
B. have a higher input impedance than BJTs
C. are smaller in construction than BJTs
D. All of the above

When comparing the common emitter and the common collector amplifiers, ()

A. the input impedance of the common collector is much larger and the output impedance of the common collector is much smaller.
B. the input impedance of the common collector is much larger and the output impedance of the common emitter is much smaller.
C. the input impedance of the common emitter is much larger and the output impedance of the common collector is much smaller.
D. the input impedance of the common emitter is much larger and the output impedance of the common emitter is much smaller.

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