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The bits that control the external interrupts are

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in Microprocessor by (39.4k points)
The bits that control the external interrupts are

(a) ET0 and ET1

(b) ET1 and ET2

(c) EX0 and EX1

(d) EX1 and EX2

I have been asked this question by my school principal while I was bunking the class.

My question is based upon Interrupt Structure of 8051 topic in portion Microcontroller 8051 of Microprocessor

1 Answer

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by (49.2k points)
The correct option is (c) EX0 and EX1

For explanation: The bits, EX0 and EX1 individually control the external interrupts, INT0(active low) and INT1(active low). If INT0(active low) and INT1(active low) interrupts are to be enabled then the bits EX0 and EX1 must be set respectively.

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