Microprocessor Fundamentals Questions and Answers

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Q1
The devices that provide the means for a computer to communicate with the user or other computers are referred to as:
  • A CPU
  • B ALU
  • C I/O
  • D none of the above
Answer: Option C
Q2
The software used to drive microprocessor-based systems is called:
  • A assembly language
  • B firmware
  • C machine language code
  • D BASIC interpreter instructions
Answer: Option A
Q3
The circuits in the 8085A that provide the arithmetic and logic functions are called the:
  • A CPU
  • B ALU
  • C I/O
  • D none of the above
Answer: Option B
Q4
How many buses are connected as part of the 8085A microprocessor?
  • A 2
  • B 3
  • C 5
  • D 8
Answer: Option B
Q5
The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.
  • A control bus
  • B control instructions
  • C address decoder
  • D CPU
Answer: Option C
Q6
How many bits are used in the data bus?
  • A 7
  • B 8
  • C 9
  • D 16
Answer: Option B
Q7
The items that you can physically touch in a computer system are called:
  • A software
  • B firmware
  • C hardware
  • D none of the above
Answer: Option C
Q8
Single-bit indicators that may be set or cleared to show the results of logical or arithmetic operations are the:
  • A flags
  • B registers
  • C monitors
  • D decisions
Answer: Option A
Q9
When referring to instruction words, a mnemonic is:
  • 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
Answer: Option B
Q10
The technique of assigning a memory address to each I/O device in the computer system is called:
  • A memory-mapped I/O
  • B ported I/O
  • C dedicated I/O
  • D wired I/O
Answer: Option A
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