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- Question
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.
- Correct Answer
- It takes analog signals and puts them in digital format.
- 1. 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
- 2. Which format can send several bits of information faster?
Options- A. Parallel
- B. Serial
- C. Both are the same
- D. Cannot tell Discuss
- 3. 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
- 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
- 5. 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
- 6. 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
- 7. 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
- 8. Which of the following is a semiconductor memory?
Options- A. RAM
- B. MAR
- C. CD-ROM
- D. CD Discuss
- 9. A periodic digital waveform has a pulse width (tw) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.
Options- A. 3.3%
- B. 33.3%
- C. 6%
- D. 18% Discuss
- 10. Convert the fractional binary number 0001.0010 to decimal.
Options- A. 1.40
- B. 1.125
- C. 1.20
- D. 1.80 Discuss
Digital Concepts problems
Search Results
Correct Answer: a HIGH = 1, a LOW = 0
Correct Answer: Parallel
Correct Answer: that vary in discrete steps in proportion to the values they represent.
Correct Answer: 66.66 Hz
Correct Answer: the input is LOW
Correct Answer: The digit with the most weight
Correct Answer: when any input is LOW
Correct Answer: RAM
Correct Answer: 33.3%
Correct Answer: 1.125
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