DAPZOI
Home Topics Quiz Login


Microprocessor Fundamentals MCQ Questions & Answers

Microprocessor Fundamentals MCQs : This section focuses on the "Microprocessor Fundamentals". These Multiple Choice Questions (MCQs) should be practiced to improve the Microprocessor Fundamentals skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the:

A. stack pointer
B. program counter
C. instruction pointer
D. accumulator

View Answer

Question 2

All computer programs for a machine are called:

A. software
B. firmware
C. hardware
D. none of the above

View Answer

Question 3

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

A. hexadecimal machine code
B. binary machine code
C. assembly language
D. all of the above

View Answer

Question 4

How many buses are connected as part of the 8085A microprocessor?

A. 2
B. 3
C. 5
D. 8

View Answer

Question 5

I/O mapped systems identify their input/output devices by giving them a(n) ________.

A. 8-bit port number
B. 16-bit port number
C. 8-bit buffer number
D. 8-bit instruction

View Answer

Question 6

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

View Answer

Question 7

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

View Answer

Question 8

The 8085A is a(n):

A. 16-bit parallel CPU
B. 8-bit serial CPU
C. 8-bit parallel CPU
D. none of the above

View Answer

Question 9

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

View Answer

Question 10

The control bus and memories share a bidirectional bus in a typical microprocessor system.

A. TRUE
B. FALSE

View Answer

Question 11

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

View Answer

Question 12

The items that you can physically touch in a computer system are called:

A. software
B. firmware
C. hardware
D. none of the above

View Answer

Question 13

The register in the 8085A that is used to keep track of the memory address of the next op-code to be run in the program is the:

A. stack pointer
B. program counter
C. instruction pointer
D. accumulator

View Answer

Question 14

The software used to drive microprocessor-based systems is called:

A. assembly language
B. firmware
C. machine language code
D. BASIC interpreter instructions

View Answer

Question 15

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

View Answer

Question 16

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

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.

View Answer

Question 17

What kind of computer program is used to convert mnemonic code to machine code?

A. debug
B. assembler
C. C++
D. Fortran

View Answer

Question 18

What type of circuit is used at the interface point of an input port?

A. decoder
B. latch
C. tristate buffer
D. none of the above

View Answer

Question 19

What type of circuit is used at the interface point of an output port?

A. decoder
B. latch
C. tristate buffer
D. none of the above

View Answer

Question 20

When was the first 8-bit microprocessor introduced?

A. 1969
B. 1974
C. 1979
D. 1985

View Answer

Question 21

Which bus is a bidirectional bus?

A. address bus
B. data bus
C. address bus and data bus
D. none of the above

View Answer

Question 22

Which of the following are the three basic sections of a microprocessor unit?

A. operand, register, and arithmetic/logic unit (ALU)
B. control and timing, register, and arithmetic/logic unit (ALU)
C. control and timing, register, and memory
D. arithmetic/logic unit (ALU), memory, and input/output

View Answer

Question 23

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?

A. data bus
B. control bus
C. address bus
D. address decoder bus

View Answer