11. |
To initialize any port as an output port what value is to be given to it?
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Answer:
Option (d) |
12. |
Which out of the four ports of 8051 needs a pull-up resistor for using it is as an input or an output port?
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Answer:
Option (a) |
13. |
Which of the ports act as the 16 bit address lines for transferring data through it?
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Answer:
Option (c) |
14. |
Which of the following registers are not bit addressable?
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Answer:
Option (b) |
15. |
Which instruction is used to check the status of a single bit?
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Answer:
Option (c) |
16. |
Which addressing mode is used in pushing or popping any element on or from the stack?
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Answer:
Option (b) |
17. |
Which operator is the most important while assigning any instruction as register indirect instruction?
|
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Answer:
Option (c) |
18. |
What is the advantage of register indirect addressing mode?
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Answer:
Option (b) |
19. |
Which of the following comes under the indexed addressing mode?
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Answer:
Option (d) |
20. |
Is this a valid statement?
|
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Answer:
Option (b) |