Digital Concepts problems
- 1. Which format requires fewer conductors?
Options- A. Parallel
- B. Serial
- C. Both are the same
- D. Cannot tell Discuss
Correct Answer: Serial
- 2. What is one relative disadvantage of serial transfer?
Options- A. It requires too many conductors.
- B. Its interconnect system is complex.
- C. It is slow.
- D. It can only be used over very short distances. Discuss
Correct Answer: It is slow.
- 3. The output of a NOT gate is HIGH when ________.
Options- A. the input is LOW
- B. the input is HIGH
- C. the input changes from LOW to HIGH
- D. voltage is removed from the gate Discuss
Correct Answer: the input is LOW
- 4. A pulse has a period of 15 ms. Its frequency is ________.
Options- A. 6.66 Hz
- B. 66.66 Hz
- C. 666.66 Hz
- D. 15 Hz Discuss
Correct Answer: 66.66 Hz
- 5. Digital representations of numerical values of quantities may BEST be described as having characteristics:
Options- A. that are difficult to interpret because they are continuously changing.
- B. that vary constantly over a continuous range of values.
- C. that vary in constant and direct proportion to the values they represent.
- D. that vary in discrete steps in proportion to the values they represent. Discuss
Correct Answer: that vary in discrete steps in proportion to the values they represent.
- 6. Which format can send several bits of information faster?
Options- A. Parallel
- B. Serial
- C. Both are the same
- D. Cannot tell Discuss
Correct Answer: Parallel
- 7. In positive logic, ________.
Options- A. a HIGH = 1, a LOW = 0
- B. a LOW = 1, a HIGH = 0
- C. only HIGHs are present
- D. only LOWs are present Discuss
Correct Answer: a HIGH = 1, a LOW = 0
- 8. What is an analog-to-digital converter?
Options- A. It makes digital signals.
- B. It takes analog signals and puts them in digital format.
- C. It allows the use of digital signals in everyday life.
- D. It stores information on a CD. Discuss
Correct Answer: It takes analog signals and puts them in digital format.
- 9. In the decimal numbering system, what is the MSD?
Options- A. The middle digit of a stream of numbers
- B. The digit to the right of the decimal point
- C. The last digit on the right
- D. The digit with the most weight Discuss
Correct Answer: The digit with the most weight
- 10. The output of an AND gate is LOW ________.
Options- A. all the time
- B. when any input is LOW
- C. when any input is HIGH
- D. when all inputs are HIGH Discuss
Correct Answer: when any input is LOW
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Programming
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