How do touchscreens work?

The video explores the fascinating process of how a simple touch on a smartphone screen can result in sending a message, specifically focusing on the display of an emoji. It delves into the technology behind touchscreens, explaining mutual capacitance sensing and charge distribution. The video further explains how binary signals are processed by computer chips and how Unicode is used to display emojis. The complexity of these processes is highlighted, showcasing the intricate physics and technology involved in everyday smartphone use.

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