Discussion
Home ‣ Digital Electronics ‣ Digital Arithmetic Operations and Circuits See What Others Are Saying!
- Question
Inside a computer all arithmetic operations take place in the ________.
Options- A. accumulator register
- B. ALU
- C. CPU
- D. B register
- Correct Answer
- ALU
- 1. Why is a pull-up resistor needed when connecting TTL logic to CMOS logic?
Options- A. to increase the output LOW voltage
- B. to decrease the output LOW voltage
- C. to increase the output HIGH voltage
- D. to decrease the output HIGH voltage Discuss
- 2. The total sink current decreases with an increase in each load gate input.
Options- A. True
- B. False Discuss
- 3. The wave-drive sequence of a stepper motor has more torque and operates more smoothly than the full-step sequence at moderate speeds.
Options- A. True
- B. False Discuss
- 4. In order to select data input I1 of a 74151 eight-line multiplexer, the select inputs must be:
Options- A. True
- B. False Discuss
- 5. An RC circuit used in a 74122 retriggerable one-shot has an REXT of 100 kΩ and a CEXT of 0.005 µF. The pulse width is ________.
Options- A. 70 µs
- B. 16 µs
- C. 160 µs
- D. 32 µs Discuss
- 6. When converting from decimal to binary by the repeated division-by-two method, the initial remainder becomes the MSD.
Options- A. True
- B. False Discuss
- 7. The 74S124 TTL chip is a voltage-controlled oscillator that will generate a specific frequency at Vout.
Options- A. True
- B. False Discuss
- 8. A major application for DSP is in ________ and ________ of analog signals.
Options- A. sending, receiving
- B. digitizing, weighting
- C. filtering, conditioning
- D. leveling, translating Discuss
- 9. The speed-power product provides a basis for the comparison of logic circuits when power dissipation and propagation delay are important considerations in the selection of the type of logic to be used.
Options- A. True
- B. False Discuss
- 10. An RC circuit used in a nonretriggerable 74121 one-shot has an REXT of 49 kΩ and a CEXT of 0.2 µF. The pulse width (tW) is approximately ________.
Options- A. 6.9 µs
- B. 6.9 ms
- C. 69 ms
- D. 690 ms Discuss
More questions
Correct Answer: to increase the output HIGH voltage
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: 160 µs
Correct Answer: False
Correct Answer: False
Correct Answer: filtering, conditioning
Correct Answer: True
Correct Answer: 6.9 ms
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