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Home ‣ Digital Electronics ‣ Number Systems and Codes Comments
  • Question

  • The binary number for octal 458 is ________.


  • Options
  • A. 100010
  • B. 100101
  • C. 110101
  • D. 100100

  • Correct Answer
  • 100101 

    • Number Systems and Codes problems

    Search Results

    • 1. Which of the following instructions will move the contents of register 3 to the accumulator?

    • Options
    • A. MOV 3R, A
    • B. MOV R3, A
    • C. MOV A, R3
    • D. MOV A, 3R
      • Discuss
    • 2. A label is used to name a single line of code.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The start-conversion on the ADC0804 is done by using the:

    • Options
    • A.
    • B. CS line
    • C. INTR line
    • D. V ref/2 line
      • Discuss
    • 5. A HIGH on which pin resets the 8051 microcontroller?

    • Options
    • A. RESET
    • B. RST
    • C. PSEN
    • D. RSET
      • Discuss
    • 6. Convert the following BCD number to decimal.
      100000000011bcd

    • Options
    • A. 8003
    • B. 803
    • C. 1003
    • D. 103
      • Discuss
    • 7. Convert 45710 to hexadecimal.

    • Options
    • A. 711
    • B. 2C7
    • C. 811
    • D. 1C9
      • Discuss
    • 8. What decimal number does 25 represent?

    • Options
    • A. 10
    • B. 31
    • C. 25
    • D. 32
      • Discuss
    • 9. Convert the following octal number to binary.
      768

    • Options
    • A. 1101112
    • B. 1111102
    • C. 1111002
    • D. 1001112
      • Discuss
    • 10. Convert the Gray code 1011 to binary.

    • Options
    • A. 1011
    • B. 1010
    • C. 0100
    • D. 1101
      • Discuss

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