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  • Question

  • What type of device is shown in the given figure, and what inputs (A3,A2,A1,A0) are required to produce the output levels as shown?

    What type of device is shown in the given figure, and what inputs (A3,A2,A1,A0) are required to prod


  • Options
  • A. A binary-to-decimal encoder; 0,1,1,1
  • B. A decimal-to-binary decoder; 1,1,1,0
  • C. A BCD-to-decimal decoder; 0,1,1,1
  • D. A decimal-to-BCD encoder; 1,1,1,0

  • Correct Answer
  • A BCD-to-decimal decoder; 0,1,1,1 

    • More questions

    • 1. In a MAX7000S device, when an I/O pin is configured as an input, the associated macrocell can be used for ________.

    • Options
    • A. buried logic
    • B. another output
    • C. extra speed
    • D. in-system testing
      • Discuss
    • 2. A half-adder circuit would normally be used each time a carry input is required in an added circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A very important attribute of the conditional signal assignment statement is its sequential operation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. In general, when using a scope to troubleshoot digital systems the instrument should be triggered by ________.

    • Options
    • A. the A channel or channel 1
    • B. the vertical input mode, when using more than one channel
    • C. the system clock
    • D. line sync, in order to observe troublesome power line glitches
      • Discuss
    • 5. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. In BCD addition, the value ________ is added to any invalid code group.

    • Options
    • A. 010101
    • B. 0U812
    • C. 100110
    • D. 0110
      • Discuss
    • 7. In the 74121, which is nonretriggerable, any triggers that come in before the end of the timing cycle are ignored.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. SPLDs, CPLDs, and FPGAs are all which type of device?

    • Options
    • A. PAL
    • B. PLD
    • C. EPROM
    • D. SRAM
      • Discuss
    • 9. Gated S-R flip-flops are called asynchronous because the output responds immediately to input changes.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A ROM that allows the user to program data into the chip by permanently opening fusible links is the EPROM.

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

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