8051 Microcontroller Instruction Set Quiz

8051 Microcontroller Instruction Set Quiz

University

15 Qs

quiz-placeholder

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8051 Microcontroller Instruction Set Quiz

8051 Microcontroller Instruction Set Quiz

Assessment

Quiz

Education

University

Practice Problem

Medium

Created by

Dr. Mary

Used 1+ times

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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the MOV instruction do?

Adds two operands

Copies data from source to destination

Copies data from destination to source

Subtracts one operand from another

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the PUSH instruction?

To copy data from the stack to a register

To copy data from a register to the stack

To decrement the stack pointer

To increment the stack pointer

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which instruction is used to multiply two unsigned numbers?

ADD A, source

MUL AB

SUB A, source

DIV AB

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the DJNZ instruction do?

Increments a byte without jumping

Decrements a byte without jumping

Increments a byte and jumps if zero

Decrements a byte and jumps if not zero

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which instruction is invalid for pushing onto the stack?

PUSH R0

PUSH 05H

PUSH A

PUSH 0E0H

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of the DIV AB instruction?

Both A and B contain the remainder

A contains the remainder, B contains the quotient

A contains the quotient, B contains the remainder

Both A and B contain the quotient

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the SWAP instruction do?

Swaps two registers

Swaps the contents of the accumulator with a register

Swaps the contents of two memory locations

Swaps the high and low nibbles of a byte

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