1. |
8051 microcontrollers are manufactured by which of the following companies?
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Answer:
Option (d) |
2. |
AT89C2051 has RAM of:
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Answer:
Option (a) |
3. |
8051 series has how many 16 bit registers?
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Answer:
Option (a) |
4. |
When 8051 wakes up then 0x00 is loaded to which register?
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Answer:
Option (c) |
5. |
When the microcontroller executes some arithmetic operations, then the flag bits of which register are affected?
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Answer:
Option (a) |
6. |
How are the status of the carry, auxiliary carry and parity flag affected if the write instruction
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Answer:
Option (b) |
7. |
How are the bits of the register PSW affected if we select Bank2 of 8051?
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Answer:
Option (d) |
8. |
If we push data onto the stack then the stack pointer
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Answer:
Option (a) |
9. |
On power up, the 8051 uses which RAM locations for register R0- R7
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Answer:
Option (b) |
10. |
How many bytes of bit addressable memory is present in 8051 based microcontrollers?
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Answer:
Option (c) |