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A door sensor is connected to the P 1 . 1 pin, and a buzzer is connected to P 1 . 7 . Write an

A door sensor is connected to the P

1.1

pin, and a buzzer is connected to P

1.7 .

Write an

8051

C program to monitor the door sensor

,

and when it opens, sound the buzzer. You can sound the buzzer by sending a square wave of a few hundred Hz

.

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