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Home ‣ Digital Electronics ‣ Signals and Switches Comments
  • Question

  • The units for the HIGH time for a periodic wave are ________.


  • Options
  • A. seconds
  • B. hertz
  • C. cycles
  • D. %

  • Correct Answer
  • seconds 

    • Signals and Switches problems

    Search Results

    • 1. 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
      • Discuss
    • 2. Determine the output voltage Vout for the circuit in the given figure.


    • Options
    • A. ?0.5 V
    • B. 0 V
    • C. +5 V
    • D. +4.3 V
      • Discuss
    • 3. The serial format for transmitting binary information uses:

    • Options
    • A. a single conductor
    • B. multiple conductors
    • C. infrared technology
    • D. fiber-optic
      • Discuss
    • 4. Is the transistor in the given figure considered ON or OFF?


    • Options
    • A. OFF
    • B. ON
    • C. Not enough information is provided.
      • Discuss
    • 5. The hexadecimal number 4B16 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
      • Discuss
    • 6. What logic function is the sum output of a half-adder?

    • Options
    • A. AND
    • B. exclusive-OR
    • C. exclusive-NOR
    • D. NAND
      • Discuss
    • 7. Solve this binary problem: 01110010 ? 01001000 =

    • Options
    • A. 00011010
    • B. 00101010
    • C. 01110010
    • D. 00111100
      • Discuss
    • 8. Solving ?11 + (?2) will yield which two's-complement answer?

    • Options
    • A. 1110 1101
    • B. 1111 1001
    • C. 1111 0011
    • D. 1110 1001
      • Discuss
    • 9. Perform subtraction on each of the following binary numbers by taking the two's-complement of the number being subtracted and then adding it to the first number.
      01001        01100
      00011        00111

    • Options
    • A. 01100    10011
    • B. 00110    00101
    • C. 10110    10101
    • D. 00111    00100
      • Discuss
    • 10. Which of the following is the primary advantage of using binary-coded decimal (BCD) instead of straight binary coding?

    • Options
    • A. Fewer bits are required to represent a decimal number with the BCD code.
    • B. BCD codes are easily converted from decimal.
    • C. the relative ease of converting to and from decimal
    • D. BCD codes are easily converted to straight binary codes.
      • Discuss

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