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What is the use of the Vcc1 pin?

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What is the use of the Vcc1 pin?

(a) Input

(b) Output

(c) Activation

(d) Power input

I have been asked this question in a national level competition.

Asked question is from Motor Driver (L293D) and Motors topic in division Interfacing of Sensors, Actuators, and Other Modules of Arduino

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The correct choice is (d) Power input

To explain I would say: The Vcc1 pin is used for powering the internal IC components. It accepts a maximum of 5V approximately. This should not be confused with the Vcc2 pin which powers the motors as that could lead to the blowout of the IC.

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