
8051 Microcontroller Instruction Set Quiz
Quiz
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Education
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University
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Practice Problem
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Medium
Dr. Mary
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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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