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Digital Electronics - Signals and Switches

Exercise : Signals and Switches - General Questions
21.
TTL logic chips must have connections to Vcc and ground, even if all inputs and outputs are properly used and tied to valid signals.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.

What is the output voltage Vout for the given circuit if the input voltage changes to 0 V?

+12 V
+15 V
+3 V
0 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.

If the input voltage on D1 in the given figure is changed to 0 V, what is the output voltage Vout?

–5 V
0 V
+5 V
+4.3 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
An indication of cutoff in an NPN bipolar transistor is that the:
collector current is maximum
collector-to-emitter voltage equals zero
base-to-emitter voltage equals 0.7 V
collector to emitter appears to be open
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
When an IC has two rows of parallel connecting pins, the device is referred to as a:
QFP
DIP
TSSOP
CMOS
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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