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  • Question
  • Which of the following is not a computer functional block?


  • Options
  • A. Analog-to-digital converter
  • B. Central-processing unit
  • C. Memory
  • D. Input/output ports

  • Correct Answer
  • Analog-to-digital converter 


  • Computers problems


    Search Results


    • 1. Which of the following is not an enhancement to the Pentium that was unavailable in the 8086/8088?

    • Options
    • A. "Pipelined" architecture
    • B. Expansion of cache memory
    • C. Inclusion of an internal math coprocessor
    • D. Data/address line multiplexing
    • Discuss
    • 2. The first microprocessor had a(n)________.

    • Options
    • A. 1-bit data bus
    • B. 2-bit data bus
    • C. 4-bit data bus
    • D. 8-bit data bus
    • Discuss
    • 3. With interrupt-driven I/O, if two or more devices request service at the same time, ________.

    • Options
    • A. the device closest to the CPU gets priority
    • B. the device that is fastest gets priority
    • C. the device assigned the highest priority is serviced first
    • D. the system is likely to crash
    • Discuss
    • 4. The process of jointly establishing communication is called ________.

    • Options
    • A. DMA
    • B. bidirectional addressing
    • C. multiplexing
    • D. handshaking
    • Discuss
    • 5. A port can be ________.

    • Options
    • A. strictly for input
    • B. strictly for output
    • C. bidirectional
    • D. all of the above
    • Discuss
    • 6. A 20-bit address bus can locate ________.

    • Options
    • A. 1,048,576 locations
    • B. 2,097,152 locations
    • C. 4,194,304 locations
    • D. 8,388,608 locations
    • Discuss
    • 7. Polled I/O works best when ________.

    • Options
    • A. there are no priority considerations
    • B. priority considerations are frequent
    • C. the polling rate exceeds 1000 s
    • D. the polling rate is below 1000 s
    • Discuss
    • 8. Which microprocessor has multiplexed data and address lines?

    • Options
    • A. 8086/8088
    • B. 80286
    • C. 80386
    • D. Pentium
    • Discuss
    • 9. The voltage levels used to represent binary values (0 and 1) in a digital system are nearly equal in value.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. Transistor-transistor logic (TTL) uses the bipolar transistor as its main circuit element.

    • Options
    • A. True
    • B. False
    • Discuss


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