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Digital Electronics - The 8051 Microcontroller

Exercise : The 8051 Microcontroller - General Questions
41.
The contents of the accumulator after this operation
MOV A,#2BH
ORL A,00H
will be:
1B H
2B H
3B H
4B H
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The following program will cause the 8051 to be stuck in a loop:
LOOP: MOV A, #00H
 JNZ LOOP
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Which of the following commands will copy the contents of RAM whose address is in register 0 to port 1?
MOV @ P1, R0
MOV @ R0, P1
MOV P1, @ R0
MOV P1, R0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The statement LCALL READ passes control to the line labelled READ.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Which of the following commands will copy the contents of location 4H to the accumulator?
MOV A, 04H
MOV A, L4
MOV L4, A
MOV 04H, A
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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