Computer organization mcqs assembly language

Computer organization mcqs assembly language

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Question 1 [CLICK ON ANY COICE TO KNOW RIGHT ANSWER]
..... converts the programs written in assembly language into machine instructions.
A
Machine compiler
B
Interpreter
C
Assembler
D
Converter
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Question 1 Explanation: 
An assembler is a software used to convert the programs into machine instructions.
Question 2 [CLICK ON ANY COICE TO KNOW RIGHT ANSWER]
The instructions like MOV or ADD are called as .....
A
OP-Code
B
Operators
C
Commands
D
None of the mentioned
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Question 2 Explanation: 
This OP - codes tell the system what operation to perform on the operands.
Question 3 [CLICK ON ANY COICE TO KNOW RIGHT ANSWER]
The alternate way of writing the instruction, ADD #5,R1 is .....
A
ADD [5],[R1];
B
ADDI 5,R1;
C
ADDIME 5,[R1];
D
There is no other way
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Question 3 Explanation: 
The ADDI instruction, means the addition is in immediate addressing mode.
Question 4 [CLICK ON ANY COICE TO KNOW RIGHT ANSWER]
Instructions which won't appear in the object program are called as .....
A
Redundant instructions
B
Exceptions
C
Comments
D
Assembler Directives
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Question 4 Explanation: 
The directives help the program in getting compiled and hence won't be there in the object code.
Question 5 [CLICK ON ANY COICE TO KNOW RIGHT ANSWER]
The assembler directive EQU, when used in the instruction: Sum EQU 200 does .....
A
Finds the first occurrence of Sum and assigns value 200 to it
B
Replaces every occurrence of Sum with 200
C
Re-assigns the address of Sum by adding 200 to its original address
D
Assigns 200 bytes of memory starting the location of Sum
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Question 5 Explanation: 
This basically is used to replace the variable with a constant value.
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