If you booted up a personal computer in the early 1980s, you weren't met with sweeping vistas or cinematic cutscenes. You were met with a harsh, glaring assault on the eyes.
Before 1987, the PC was strictly a machine for spreadsheets, word processing, and business. But a quiet hardware revolution was brewing, one that would ultimately dethrone the arcade cabinet and turn the personal computer into the ultimate multimedia machine. It was called the Video Graphics Array (VGA), and it changed digital art forever.
To understand why VGA was such a monumental leap, you have to look at the dark ages that came before it.
In the early days, IBM established the CGA (Colour Graphics Adapter) standard. It was notorious for its hideous limitations. It could only push four colours to the screen at a time out of a possible sixteen. Game developers were forced to rely on the brightest, most jarring colours available, resulting in digital landscapes dominated by aggressive cyan, hot magenta, black, and white.
By 1984, the EGA (Enhanced Graphics Adapter) brought some much needed relief, allowing for 16 simultaneous colours. Games looked better, but they still felt distinctly "digital." Everything was blocky, flat shaded, and lacked depth. The PC was still miles behind the lush, vibrant graphics found in local arcades or dedicated gaming consoles like the Sega Genesis.
Everything changed in April 1987. IBM launched a brand new line of premium computers called the Personal System/2 (PS/2), and hidden inside their beige cases was a custom graphics chip that IBM dubbed the Video Graphics Array.
The true genius of VGA wasn't just memory or processing power, it was a fundamental shift from digital to analogue signals.
Older monitors received rigid digital signals (on or off) for red, green, and blue, which severely bottlenecked how many colours could be mixed. VGA, however, used analogue signals, sending varying voltages to each colour channel. This analogue alchemy meant the VGA chip could mix colours from a mind-bending master palette of 262,144 possible colours.
The VGA hardware came with a few different display modes, but it essentially had two distinct personalities that would go on to define the 1990s:
With 256 colors, you could finally use shading, subtle gradients, and anti aliasing. You could draw a sky that actually faded from midnight blue to dusk purple. Studios like Sierra and LucasArts began painting physical oil canvases and scanning them directly into the computer. It made games look practically photorealistic for the era.
IBM originally intended for VGA to be a proprietary technology, a secret weapon to force consumers to buy their expensive PS/2 machines. The industry had other plans.
Third-party hardware manufacturers like Compaq, Tseng Labs, and Cirrus Logic quickly reverse engineered the VGA chip. Within months, they began flooding the market with cheap, "VGA compatible" expansion cards that anyone could plug into a standard, off the shelf PC.
"Because these third-party clones were perfectly compatible with IBM's underlying architecture, software developers realized they could write one piece of code, a universal VGA driver and it would work on almost any new PC on the planet."
This accidental standardization triggered a golden age of PC gaming in the early 1990s. The lush, 256 colour palette gave us the gorgeous, cinematic adventuring of The Secret of Monkey Island and King's Quest V. A few years later, id Software would utilize that exact same VGA palette to render the gritty, blood-soaked, 3D corridors of Wolfenstein 3D and DOOM.
VGA was the very last graphical standard that IBM ever successfully dictated to the industry. Everything that came after it,like Super VGA (SVGA) was built by independent consortiums expanding on that original 1987 foundation.
Yet, its legacy outlasted the 90s. Even as modern GPUs began pushing millions of pixels in 4K resolution, the physical 15-pin blue D-sub connector created for the IBM PS/2, the iconic "VGA cable" remained the absolute standard way to plug a monitor into a computer for nearly thirty years.
