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  • Question
  • What is the hexadecimal equivalent of a binary number 10101111


  • Options
  • A. AF
  • B. 9E
  • C. 8C
  • D. All of the above
  • E. None of the above

  • Correct Answer
  • AF 


  • Digital Computer Electronics problems


    Search Results


    • 1. Conversion of binary number 1000112 to an octal number is

    • Options
    • A. 438
    • B. 478
    • C. 498
    • D. 508
    • E. None of the above
    • Discuss
    • 2. A shift register can be used for:

    • Options
    • A. parallel to serial conversion
    • B. serial to parallel conversion
    • C. digital delay line
    • D. all of the above
    • E. None of the above
    • Discuss
    • 3. The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.

    • Options
    • A. EPROM
    • B. ROM
    • C. PROM
    • D. RAM
    • E. None of the above
    • Discuss
    • 4. Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.

    • Options
    • A. SSI, 75
    • B. SSI, 100
    • C. SSI, 1000
    • D. SSI, 10000
    • E. None of the above
    • Discuss
    • 5. A logic circuit which is used to change a BCD number into an equivalent decimal number is

    • Options
    • A. decoder
    • B. encoder
    • C. multiplexer
    • D. code converter
    • E. None of the above
    • Discuss
    • 6. Which of the following TTL subfamily is the fastest

    • Options
    • A. standard TTL
    • B. high-speed TTL
    • C. schottky TTL
    • D. low-speed TTL
    • E. None of the above
    • Discuss
    • 7. A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

    • Options
    • A. decoder
    • B. encoder
    • C. multiplexer
    • D. demultiplexer
    • E. None of the above
    • Discuss
    • 8. The fan-out capability of a digital building block can be defined as

    • Options
    • A. the number of inputs that one output can transmit to
    • B. the amount of cooling required for fanning the hear out
    • C. the number of inputs that can transmit to one input
    • D. the maximum power dissipation (heat generation) that the unit can stand.
    • E. None of the above
    • Discuss
    • 9. Conversion of binary number 11000012 to hexadecimal is

    • Options
    • A. 5716
    • B. 6116
    • C. 5116
    • D. 4316
    • E. None of the above
    • Discuss
    • 10. How many outputs signals can a gate have?

    • Options
    • A. one
    • B. more than one
    • C. two only
    • D. both (a) and (b)
    • E. None of the above
    • Discuss


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