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Home ‣ Digital Electronics ‣ MSI Logic Circuits See What Others Are Saying!
  • Question

  • The data transmission system shown in below has a problem; the parity error output is always high. A logic analyzer is used to examine the system and shows that the DATA IN on the left matches the DATA OUT on right. What might be causing the problem?

    The data transmission system shown in below has a problem; the parity error output is always high. A


  • Options
  • A. The error gate could be defective.
  • B. The storage circuit could be defective.
  • C. The parity checker could be bad.
  • D. Any of the above.

  • Correct Answer
  • Any of the above. 

    • More questions

    • 1. 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
    • 2. If a 3-input OR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

    • Options
    • A. 1
    • B. 2
    • C. 7
    • D. 8
      • Discuss
    • 3. The select inputs to a multiplexer may also be called address lines.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. How many 2-input NOR gates does it take to produce a 2-input NAND gate?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 5. The 7476 and 74LS76 are both dual flip-flops.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. How many different states does a 3-bit asynchronous counter have?

    • Options
    • A. 2
    • B. 4
    • C. 8
    • D. 16
      • Discuss
    • 7. The invalid range for an input to TTL logic is from ________.

    • Options
    • A. 0 to 0.8 V
    • B. 1.2 to 1.6 V
    • C. 0.8 to 2.0 V
    • D. 2.0 to 5.0 V
      • Discuss
    • 8. A typical fan-out for most TTL is 9.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The outputs of the 74138 octal decoder are enabled when the enable inputs are
      .

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Convert the following hexadecimal number to decimal.
      B516

    • Options
    • A. 212
    • B. 197
    • C. 165
    • D. 181
      • Discuss

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