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Digital Electronics
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Signals and Switches
Comments
Question
Determine the output voltage
V
out
for the circuit in the given figure.
Options
A. ?0.5 V
B. 0 V
C. +5 V
D. +4.3 V
Correct Answer
+4.3 V
Signals and Switches problems
Search Results
1. The serial format for transmitting binary information uses:
Options
A. a single conductor
B. multiple conductors
C. infrared technology
D. fiber-optic
Show Answer
Scratch Pad
Discuss
Correct Answer: a single conductor
2. Is the transistor in the given figure considered ON or OFF?
Options
A. OFF
B. ON
C. Not enough information is provided.
Show Answer
Scratch Pad
Discuss
Correct Answer: OFF
3. The hexadecimal number 4B
16
is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?
Options
A. 444 ns
B. 444 µs
C. 3.55 µs
D. 3.55 ms
Show Answer
Scratch Pad
Discuss
Correct Answer: 444 ns
4. What is the advantage of using serial data transmission over parallel data transmission?
Options
A. It is slower.
B. Only one pair of wires is required.
C. More people use it.
D. It is faster.
Show Answer
Scratch Pad
Discuss
Correct Answer: Only one pair of wires is required.
5. If the input voltage on
D
1
in the given figure is changed to 0 V, what is the output voltage
V
out
?
Options
A. ?5 V
B. 0 V
C. +5 V
D. +4.3 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 0 V
6. To forward bias a diode, a ________ potential is needed on the ________ and a ________ is needed on the ________.
Options
A. negative, cathode, positive, anode
B. negative, anode, positive, cathode
Show Answer
Scratch Pad
Discuss
Correct Answer: negative, cathode, positive, anode
7. The units for the HIGH time for a periodic wave are ________.
Options
A. seconds
B. hertz
C. cycles
D. %
Show Answer
Scratch Pad
Discuss
Correct Answer: seconds
8. What logic function is the sum output of a half-adder?
Options
A. AND
B. exclusive-OR
C. exclusive-NOR
D. NAND
Show Answer
Scratch Pad
Discuss
Correct Answer: exclusive-OR
9. Solve this binary problem: 01110010 ? 01001000 =
Options
A. 00011010
B. 00101010
C. 01110010
D. 00111100
Show Answer
Scratch Pad
Discuss
Correct Answer: 00101010
10. Solving ?11 + (?2) will yield which two's-complement answer?
Options
A. 1110 1101
B. 1111 1001
C. 1111 0011
D. 1110 1001
Show Answer
Scratch Pad
Discuss
Correct Answer: 1111 0011
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