Reference Guide

7.1 Audio
7.1 refers to the number of audio channels in high-end surround-sound configurations. A 7.1 audio system uses two additional
speakers (rear left and rear right) in combination with the 5.1 audio system. For more information on setting up audio, see
Setting up audio.
Webcam
A webcam enables 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 setting up the webcam,
see Setting up your 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
Replace this text with your content. Devices are connected using Ethernet cables and cover a relatively small area, generally
within a house or a building.
Wireless Local Area Network
Devices are connected wirelessly and cover a relatively small area, generally within a house or a building. The wireless
connection used for setting up WLAN is generally Wi-Fi (802.11x where x refers to the different 802.11 protocols).
Wireless Wide Area Network
Also known as Mobile Broadband, this service is generally provided by the phone companies for use on mobile devices. A mobile
device or laptop must support WWAN technology to connect to this network.
Wireless Personal Area Network
Devices are generally connected wirelessly using Bluetooth, RF, Near-Field Communication (NFC), and so on. This type of
network generally operates within a few feet of the devices. To connect your computer or tablet to the internet, see Connecting
to the internet.
Modem
Modems allow you to connect your computer or router to the internet. Modems can be analog (dial-up) or digital (DSL or cable).
DSL or cable modems are generally provided by your internet service provider.
● Dial-up modem—Electronic devices that convert analog phone signals into digital signals that the computer can process
and digital computer signals into analog signals that can be transmitted over the telephone lines. Dial-up modems can be
internal or external.
● Digital modem—Used to send and receive data to and from a digital telephone line, like Digital Subscriber Line (DSL) or
Integrated Services Digital Network (ISDN).
About your computer
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