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How many interrupts are there in micro controller?

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How many interrupts are there in micro controller?

(a) 3

(b) 6

(c) 4

(d) 5

The question was asked in an interview for job.

My question comes from Microcontroller (8051) topic in chapter Prototyping Embedded Devices of IOT

1 Answer

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Best answer
The correct answer is (d) 5

The explanation: An interrupt is an external or internal event that disturbs the microcontroller to inform if that needs its services. There are 5 interrupts :

Timer 0 overflow interrupt

Timer 1 overflow interrupt

External Interrupt 0

External Interrupt 1

Serial port events.

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