Question

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Answer 1

Webcam

A webcam is a video camera that feeds or streams an image or video in real time to or through a computer to a computer network, such as the Internet. Webcams are typically small cameras that sit on a desk, attach to a user's monitor, or are built into the hardware.

webcam is a digital video device commonly built into a computer. Its main function is to transmit pictures over the Internet. It is popularly used with instant messaging services and for recording images.

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Answer 2

Mobiles : This type of device have both disadvantages and advantages. It connects people living so far and disconnects from the people living so close.

This above line has shown you both advantage and disadvantage.