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Webcams

​A webcam is an external computer’s device to capture video. The video quality of an external webcam is usually better than quality of laptop’s built-in camera. If there issues with video quality of the internal camera, then it may be a good idea to try a webcam. Positioning of a webcam is also flexible, so it is possible to adjust how video will appear on the other end. Multiple applications that require access to webcam may lead to a conflict, which one will use it. Using just one application at a time that uses a web cam, will help to avoid these issues.
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Headset

​A headset in device that can be worn overhead to allow for better quality of voice during conversations using a computer. A headset includes both a microphone and a speaker. In order to use a headset it maybe needed to select headset’s microphone and a speaker to be used by the operating system for audio.
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Touchpen

​Touch-pen can be used to provide penmanship experience to the devices that support this sort of functionality. Touch-pen with a battery is also pressure sensitive, so it is possible to draw thicker lines in a drawing application. Touch-pens with a battery are more expensive than those that do not require one. Touch-pen is also known as a stylus. Touch-pens provide better control, so it is good to have touch-pens for drawing applications. Touch-pens can also be used to capture written text.
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Touchscreen / digitizer

​Some screens are made that they are touch sensitive. Touch sensitivity is provided by transparent layer before the display.
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Laptop’s built-in camera

​A laptop’s built-in camera is usually found at the top center of a display. Microphone for this camera is also located in a close proximity of it. When such camera is replaced, it is important to align it properly. A camera that points to wrong direction may not capture things properly or its view may be obstructed by the display. The microphone for this camera is located to close proximity of it. This microphone if obstructed may cause sound issues.
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Wi-Fi antenna in a laptop

​Wi-Fi antenna in a laptop is typically routed behind a screen of a laptop at the perimeter of that screen. Work with it requires to be very careful. If it is broken, then maybe it is a good idea to get USB Wi-Fi dongle. It will be less expensive than fixing laptop’s Wi-Fi antenna, and it will avoid potential of a damage.
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OLED displays

​Letter O in OLED stands for organic. Such displays are flexible, therefore it is possible to have curved displays with such technology.
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