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Computer Hardware And Software Online Exam Quiz

Important questions about Computer Hardware And Software. Computer Hardware And Software MCQ questions with answers. Computer Hardware And Software exam questions and answers for students and interviews.

1. 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

2. Which bus is bidirectional?

Options

A : data bus

B : control bus

C : address bus

D : multiplexed bus

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

Options

A : assembly language programs

B : firmware

C : BASIC interpreter instructions

D : flowchart instructions

4. A coprocessor is a microprocessor designed with a limited instruction set optimized to perform arithmetic operations very quickly.

Options

A : True

B : False

C :

D :

5. The language understood by the microprocessor is called assembly language.

Options

A : True

B : False

C :

D :

6. Machine language is independent of the type of microprocessor in a computer system.

Options

A : True

B : False

C :

D :

7. A mnemonic is an English-like instruction that is converted by an assembler into a machine code for use by a processor.

Options

A : True

B : False

C :

D :

8. A machine cycle is the time it takes a microprocessor to fetch and execute a complete instruction.

Options

A : True

B : False

C :

D :

9. An address bus is also called a unidirectional bus.

Options

A : True

B : False

C :

D :

10. A compiler is a translation program that converts high-level instructions into a set of binary instructions (machine code) for execution.

Options

A : True

B : False

C :

D :

1. It takes two memory locations (16 bits each) to store an address in the 8085 system.

Options

A : True

B : False

C :

D :

2. To keep the number of IC pins to a minimum, the 8085 uses a multiplexed bus.

Options

A : True

B : False

C :

D :

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

Options

A : True

B : False

C :

D :

4. The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.

Options

A : stack pointer

B : program counter

C : instruction pointer

D : accumulator

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

Options

A : stack pointer

B : program counter

C : instruction pointer

D : accumulator

6. Since microprocessor CPUs do not understand mnemonics as they are, they have to be converted into __________.

Options

A : hexadecimal machine code

B : high-level language

C : assembly language

D : hexadecimal machine code and assembly language

7. The first part of a machine language instruction that specifies the operation to be performed is called a(n) __________.

Options

A : mnemonic

B : opcode

C : interrupt

D : instruction cycle

8. The __________ program is used to convert mnemonic code to machine code.

Options

A : debug

B : C++

C : fortran

D : assembler

9. The circuits in the 8085 that provide the arithmetic and logic functions are called the __________.

Options

A : CPU

B : ALU

C : I/O

D : bus decoder

10. A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.

Options

A : instruction cycle

B : machine cycle

C : timing cycle

D : write cycle

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