Video Types & Connectors
This post will help those taking the CompTIA ITF+ and A+ exams.
Our goal is to show a visual representation of the connectors, whether they use analog or digital signals, and whether they provide video only or video and audio.
Composite video provided video and audio. The video signal was analog only. The connecting cables are called RCA connectors.
The VGA (Video Graphics Array) provided an analog signal for video; there was no audio. The connector has 15 pins.
DVI (Digital Visual Interface) is used for video only. The connector dictates what signal is being provided.
DVI-A signal is analog only
DVI-D signal is digital only
DVI-I can be used with either analog or digital signals.
DisplayPort provides a digital signal for video and audio. A single DisplayPort connector on the PC can be used to create a dual monitor setup, which can be daisy-chained.
Thunderbolt provides both video and audio in a digital format. Like DisplayPort, it only needs one port for dual monitors. Thunderbolt is also used for data transfer.
HDMI delivers both video and audio in a digital format.
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