HDMI is the abbreviation of (High Definition MulTImedia Interface), which means high-definition multimedia interface. HDMI is a digital video/audio interface technology. It is a dedicated digital interface suitable for image transmission. It can transmit audio and video signals at the same time. The highest data transmission speed. It is 48Gbps (version 2.1).
There is no need to perform digital/analog or analog/digital conversion before signal transmission. HDMI can be paired with Wide band Digital Content Protection (HDCP) to prevent unauthorized copying of copyrighted audio and video content. The extra space available for HDMI can be applied to audio and video formats that will be upgraded in the future.
VGA :The information processed by the graphics card is ultimately output to the display. The output interface of the graphics card is the bridge between the computer and the display, which is responsible for outputting corresponding image signals to the display. CRT monitors can only accept analog signal input for design and manufacturing reasons, which requires the graphics card to output analog signals. VGA interface is the interface for outputting analog signals on the graphics card, and the VGA (Video Graphics Array) interface, also called the D-Sub interface. Although the LCD monitor can directly receive digital signals, many low-end products use a VGA interface in order to match the VGA interface card. The VGA interface is a D-type interface with a total of 15 pins on the top, divided into three rows, five in each row.
The difference between VGA Cable and HDMI Cable
1, VGA transmission is a separate analog video signal, HDMI transmission is a digital audio and video signal, HDMI is easy to use and transmission effect is much better than VGA
2, the standard VGA cable consists of 3 groups + 9 cores total of 15 cores, and now the latest version of HDMI 1.4 consists of 5 groups + 4 cores total of 19 cores