Dell Inspiron 17 (7737, Mid 2013) - Manual (Page 40)

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Webcam
Webcam
A webcam allows you to capture videos and photos, and can also be used
for video calls. Your display may have a built-in webcam or you can connect
external webcam to your computer. Camera quality is mainly defined by the
number of pixels it can capture.
To use the webcam, you must install webcam drivers and software. If you
ordered the webcam along with your computer, the drivers and software are
generally installed when you receive your computer.For more information
on using up the webcam, see
“Using the Webcam” .
Network
A network allows you to connect your devices with each other and to the
internet. These devices include computers, tablets, phones, printers, and
other peripherals. You can set up your network using cables (LAN) or using
wireless devices (WLAN). Networks can be set up using Ethernet, Wi-Fi,
WWAN, Bluetooth, and so on.
Local Area Network (LAN)
Devices are connected using Ethernet cables and cover a relatively small
area, generally within a house or a building.