Tipos de tarjetas de video

The graphics card It is an electronic tool that deals with organizing and specifying the way in which the texts and images that are seen on a computer monitor will be displayed. They are those that send signals to the computer, projector or television. The quality of the graphics card in a computer contributes a lot when playing a video game or editing a video.

The graphics card is in charge of translating the data that is processed in the computer and displaying it in a way that can be understood by people who are not computer experts, this instrument is also called video controller or video accelerator.

Currently there are a large number of brands and models of graphics or video cards and most of these are aimed at people who need a lot of graphics skills to do work.

The origin of these devices dates back to the late 1960s, at which time the use of a printer to see the activity of computers was stopped in the past and the use of monitors began.

Types of video cards

Super VGA card

It consists of a conglomerate of graphic models designed to provide better resolution quality than the VGA.

The Super VGA emerged in 1989, in its first model, it supported a resolution of 850x 600 pixels and a color gamut of 16.7 million, but the amount of colors it can display simultaneously is restricted by the amount of memory graph placed in the system.

Later a version of 1025 × 770 pixels came out. Super VGA models are designed by a monitor manufacturer company known as VESA.

VGA card

It is a graphic model of computer screens designed by the IBM company. The VGA card became a de facto model for computers. These devices brought 250 KB of graphic memory.

Unlike other older card types, VGA uses analog signals. For this reason, a monitor created for previous models cannot use a VGA card.

Since its launch in 1987, many other models have been designed, giving more resolution and more shades.

Hercules card

It consists of a computer video card designed by Van Suwannukul, creator of the Hercules Computer Technology company.

Suwannukul designed this device to create his PhD thesis, using his native language, Thai.

It was created in 1982. The original version filled the gap left by the IBM MDA model. The MDA system could generate texts.

MDA card

This was an old model of a computer screen incorporated by the IMB in 1981. The MDA can contain high-resolution monochrome text, however it cannot have graphics or colors.

The resolution for the texts is 725x 360 pixels. It has an aspect ratio of 72:30. It can display 85 columns for 30 lines of text.

The common IBM MDA card had 4KB of graphics memory. The MDA had features like bold, underline, and invisibility.

MDA cards challenged CGAs also owned by IBM, which emerged at the same time.

CGA card

It is an old video card for computers. It was created by the IBM company in 1981. CGA was the color graphics card for IBM computers. It was created primarily for computer video games. This card held approximately 16 colors.

The CGA video card brought 15 KB of graphic memory. This type of device had a high resolution for CGA with Form 2 which had 640 × 200 pixels.

EGA card

This graphics card was created by IBM in 1984. With this device, the number of tones, the resolution in texts and graphics were increased and all the deficiencies of the CGA card were improved.