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Home ‣ Digital Electronics ‣ Digital Arithmetic Operations and Circuits Comments
  • Question

  • A four-bit adder can perform ________.


  • Options
  • A. addition
  • B. subtraction
  • C. logical AND
  • D. All of the above

  • Correct Answer
  • addition 

    • Digital Arithmetic Operations and Circuits problems

    Search Results

    • 1. The two's complement of 00001111 is ________.

    • Options
    • A. 11111111
    • B. 11110000
    • C. 11110001
    • D. 11110111
      • Discuss
    • 2. When decimal numbers with several digits are to be added together using BCD adders ________.

    • Options
    • A. a separated BCD adder is required for each digit position
    • B. the BCD adders must have the carry-outs grounded
    • C. the BCD's must be grouped in twos
    • D. full adders are also used
      • Discuss
    • 3. Binary numbers can be added together in a basic parallel-adder circuit when ________.

    • Options
    • A. negative numbers are in 2's-complement form
    • B. negative numbers are in 1's-complement form
    • C. all carry pins are grounded
    • D. all negative numbers are noted
      • Discuss
    • 4. The contents of the A register after is ________.

    • Options
    • A. 0000
    • B. 0001
    • C. 1001
    • D. 1010
      • Discuss
    • 5. A 74HC283 can be used to implement a(n) ________ adder.

    • Options
    • A. 4-bit BCD
    • B. 8-bit BCD
    • C. 4-bit full
    • D. 8-bit full
      • Discuss
    • 6. The binary subtraction 1 ? 1 = ________.

    • Options
    • A. difference = 0
      borrow = 0
    • B. difference = 1
      borrow = 0
    • C. difference = 1
      borrow = 1
    • D. difference = 0
      borrow = 1
      • Discuss
    • 7. If [A] = 10 and [B] = 01, then [A] [b] = ________.

    • Options
    • A. [00]
    • B. 00
    • C. 11
    • D. [11]
      • Discuss
    • 8. The binary addition of 1 + 1 = ________.

    • Options
    • A. sum = 1
      carry = 1
    • B. sum = 0
      carry = 0
    • C. sum = 1
      carry = 0
    • D. sum = 0
      carry = 1
      • Discuss
    • 9. FC48 ? AB91 = ________.

    • Options
    • A. 5B77
    • B. 5267
    • C. 50B7
    • D. 5077
      • Discuss
    • 10. When subtracting 6 from 9 using 2's-complement methods, the ________ is 2's complemented before the addition.

    • Options
    • A. six
    • B. multiplier
    • C. nine
    • D. two
      • Discuss

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