Reference Guide

Table Of Contents
TV tuners are mostly standalone, however some video cards also have built-in TV tuners. For more information on using TV
tuners, see the documentation for the TV tuner.
Speakers
Laptops and tablets have built-in speakers for audio output. Desktops also have a built-in speaker. However, they are used only
to produce beeps to indicate errors or failures.
You can also connect external speakers to your computer or tablet. Speakers may support 3.5 mm audio connector, USB, or
wireless connection to your computer.
Speakers are generally categorized by the number of audio channels they support such as; 2, 2.1, 5.1, 7.1, and so on. The digit
before the decimal point indicates the number of channels and the digit after the decimal indicates the sub-woofer.
NOTE: Your sound card and speakers must support 5.1/7.1 channels for producing 5.1/7.1 channel audio.
2.1 Audio
2.1 refers to a system with two speakers (left and right channel) and one subwoofer.
5.1 Audio
5.1 refers to the number of audio channels in most surround-sound configurations. A 5.1 audio system uses five main audio
channels (front left, front right, center, left surround, and right surround) and one low-frequency audio channel.
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About your computer