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More Input devices (Digital Cameras (has a microprocessor which can:…
More Input devices
Digital Cameras
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use an array of photo sensors to record the incoming pattern of light. Each sensor returns an electrical current when it’s struck by the incoming light.
Because the amount of current that’s returned varies with the amount of light, your digital camera’s electronic innards can combine the different current levels into an image in the form of a binary file.
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Touchscreens
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• They allow simple touch to launch an application or to carry out many of the functions of pointing devices such as a mouse.
• One of the main uses of touchscreen is in mobile phones. At present, there are three major types of touchscreen technologies applied to mobile phone or tablet screens:
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QR reader
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how it works
It bounces a narrow beam of light onto the code which can be interpreted using a pattern of light reflected of the white gaps between lines.
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