Input-output audio and video

The laptop has a screen and internal speakers but in some circumstances it is useful, even necessary, to be able to connect to hi-fi systems or video performance, for example for a presentation or for the screening of a DVD. The laptops offer as standard a VGA connector to connect an external monitor or projector. Sometimes laptops are equipped with a video output (called TV-output), that is to say, an S-Video connector to connect the computer directly to a TV. Regarding the audio, laptops have a headphone jack and a microphone input jack as standard, as well as stereo speakers which are of more or less good quality. The presence of an S / PDIF (digital audio output) can connect the computer to a sound system that supports a refund in Dolby Digital 5.1 (for use Home Cinema, for example)