Computer Hardware and Software Questions and Answers

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Q1
What is the difference between mnemonic codes and machine codes?
  • 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.
  • D Machine codes are in shorthand English, mnemonic codes are a high-level language.
Answer: Option B
Q2
Which bus is bidirectional?
  • A data bus
  • B control bus
  • C address bus
  • D multiplexed bus
Answer: Option A
Q3
 The software used to drive microprocessor-based systems is called:
  • A assembly language programs
  • B firmware
  • C BASIC interpreter instructions
  • D flowchart instructions
Answer: Option A
Q4
A microprocessor unit, a memory unit, and an input/output unit form a:
  • A CPU
  • B compiler
  • C microcomputer
  • D ALU
Answer: Option C
Q5
How many buses are connected as part of the 8085 microprocessor?
  • A 2
  • B 3
  • C 5
  • D 8
Answer: Option B
Q6
 Which of the following is not a computer bus?
  • A data bus
  • B timer bus
  • C control bus
  • D address bus
Answer: Option B
Q7
The technique of assigning a memory address to each I/O device in the SAM system is called:
  • A wired I/O
  • B I/O mapping
  • C dedicated I/O
  • D memory-mapped I/O
Answer: Option D
Q8
How many bits are used in the data bus?
  • A 7
  • B 8
  • C 9
  • D 16
Answer: Option B
Q9
A port can be:
  • A strictly for input
  • B strictly for output
  • C bidirectional
  • D all the above
Answer: Option C
Q10
Which of the following is not a basic element within the microprocessor?
  • A microcontroller
  • B arithmetic-logic unit (ALU)
  • C temporary register
  • D accumulator
Answer: Option A

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