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  • Question
  • What is the difference between a mnemonic code and machine code?


  • Options
  • A. There is no difference.
  • B. Machine codes are in binary, mnemonic codes are in shorthand English.
  • C. Machine codes are in shorthand English, mnemonic codes are in binary.

  • Correct Answer
  • Machine codes are in binary, mnemonic codes are in shorthand English. 


  • Microprocessor Fundamentals problems


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    • 1. Because microprocessor CPUs do not understand mnemonics as they are, they have to be converted to ________.

    • Options
    • A. hexadecimal machine code
    • B. binary machine code
    • C. assembly language
    • D. all of the above
    • Discuss
    • 2. The 8085A is a(n):

    • Options
    • A. 16-bit parallel CPU
    • B. 8-bit serial CPU
    • C. 8-bit parallel CPU
    • D. none of the above
    • Discuss
    • 3. When referring to instruction words, a mnemonic is:

    • Options
    • A. a short abbreviation for the operand address
    • B. a short abbreviation for the operation to be performed
    • C. a short abbreviation for the data word stored at the operand address
    • D. shorthand for machine language
    • Discuss
    • 4. What kind of computer program is used to convert mnemonic code to machine code?

    • Options
    • A. debug
    • B. assembler
    • C. C++
    • D. Fortran
    • Discuss
    • 5. The software used to drive microprocessor-based systems is called:

    • Options
    • A. assembly language
    • B. firmware
    • C. machine language code
    • D. BASIC interpreter instructions
    • Discuss
    • 6. Which of the following buses is primarily used to carry signals that direct other ICs to find out what type of operation is being performed?

    • Options
    • A. data bus
    • B. control bus
    • C. address bus
    • D. address decoder bus
    • Discuss
    • 7. How many bits are used in the data bus?

    • Options
    • A. 7
    • B. 8
    • C. 9
    • D. 16
    • Discuss
    • 8. The control bus and memories share a bidirectional bus in a typical microprocessor system.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. Which bus is bidirectional?

    • Options
    • A. Address bus
    • B. Control bus
    • C. Data bus
    • D. None of the above
    • Discuss
    • 10. Which of the following was not a design improvement for the 8086/8088 over the 8085?

    • Options
    • A. Execution unit (EU)
    • B. 16-bit data bus
    • C. Arithmetic logic unit (ALU)
    • D. Bus interface unit (BIU)
    • Discuss


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