In the industrial control industry, we must understand some common terms used in professional hardware facilities. Do you understand the difference between HDMI and VGA? Let's follow the editor to understand the difference between HDMI and VGA?
VGA is an analog signal, and HDMI is a digital signal, which can transmit audio and video signals at the same time. The signals transmitted by the two are different, will the display effect be different? Let's take a look at the explanation of the two terms.
VGA (Video Graphics Array) is the video graphics array. It is a video transmission standard that uses analog signals introduced by IBM in 1987 with the PS/2 machine. At that time, it had the advantages of high resolution, fast display speed, and rich colors. The field of color displays has been widely used. This standard is very outdated for the current personal computer market. Even so, VGA is still a standard supported by most manufacturers, and personal computers must support the VGA standard before loading their own unique drivers. For example, the startup screen of Microsoft Windows products still uses VGA display mode, which also shows its importance and compatibility in the display standard.
HDMI interface is high-definition multimedia interface, the English name is: 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 maximum data transmission speed is 5Gbps. Simply put, HDMI is connected to a monitor or TV, and is used to receive the HDMI output signal on the graphics card.
I believe that many friends will be very tired after reading so many texts to introduce these two kinds of output. Below, we will compare the difference between HDMI and VGA with an example diagram.
(HDMI display is more stereo)
(VGA display is relatively flat and soft)
In the industrial control industry, generally speaking, the resolution of the monitor we use does not need to be very high-definition, and it is almost the same with VAG analog information output. In terms of wires, VGA wires are much cheaper than HDMI wires. In addition, on the interface, the VGA interface is equipped with double screws, and the signal output in the industrial field is much more stable than HDMI.
