Electronics-Computer Hardware and Software

Electronics-Computer Hardware and Software
1. What is the difference between mnemonic codes and machine codes?
  • There is no difference.
  • Machine codes are in binary, mnemonic codes are in shorthand English.
  • Machine codes are in shorthand English, mnemonic codes are in binary.
  • Machine codes are in shorthand English, mnemonic codes are a high-level language.
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2. Which bus is bidirectional?
  • data bus
  • control bus
  • address bus
  • multiplexed bus
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3.  The software used to drive microprocessor-based systems is called:
  • assembly language programs
  • firmware
  • BASIC interpreter instructions
  • flowchart instructions
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4. A microprocessor unit, a memory unit, and an input/output unit form a:
  • CPU
  • compiler
  • microcomputer
  • ALU
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5. How many buses are connected as part of the 8085 microprocessor?
  • 2
  • 3
  • 5
  • 8
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6.  Which of the following is not a computer bus?
  • data bus
  • timer bus
  • control bus
  • address bus
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7. The technique of assigning a memory address to each I/O device in the SAM system is called:
  • wired I/O
  • I/O mapping
  • dedicated I/O
  • memory-mapped I/O
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8. How many bits are used in the data bus?
  • 7
  • 8
  • 9
  • 16
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9. A port can be:
  • strictly for input
  • strictly for output
  • bidirectional
  • all the above
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10. Which of the following is not a basic element within the microprocessor?
  • microcontroller
  • arithmetic-logic unit (ALU)
  • temporary register
  • accumulator
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Electronics
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