Computer Logic 2

10 Questions | Total Attempts: 251

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Computer Logic 2

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Questions and Answers
  • 1. 
    A logic gate that gives an output of TRUE only if both inputs are true
    • A. 

      NOT gate

    • B. 

      OR gate

    • C. 

      AND gate

  • 2. 
    An inverter gate
    • A. 

      NOT gate

    • B. 

      OR gate

    • C. 

      AND gate

  • 3. 
    What is the smallest binary number that can be represented in an 8-bit register?
    • A. 

      0000 0000

    • B. 

      1111 1111

    • C. 

      255

  • 4. 
    What is the largest unsigned binary number that can be represented in an 8-bit register?
    • A. 

      0000 0000

    • B. 

      1111 1111

    • C. 

      255

  • 5. 
    Give the two's complement of 010011001
    • A. 

      10110111

    • B. 

      10110110

    • C. 

      1

  • 6. 
    Add the following binar numbers: 1010 + 0010
    • A. 

      1000

    • B. 

      1110

    • C. 

      1100

  • 7. 
    Computer registers hold binary numbers.  Binary numbers can represent
    • A. 

      Numbers and characters

    • B. 

      Numbers only

    • C. 

      Characters only

  • 8. 
    What is an overflow error?
    • A. 

      An error that occurs when a logic circuit can only output a 1

    • B. 

      An error that occurs when a value is too large to fit in the available register

    • C. 

      A programming error

  • 9. 
    The one's complement of 01101110 is
    • A. 

      11101110

    • B. 

      01101111

    • C. 

      10010001

  • 10. 
    What is the smallest two's complement that can be stored in an 8-bit register? (Give the decimal equivalent of this number)
    • A. 

      -128

    • B. 

      0

    • C. 

      -127