Did you ever wonder what your monitor and your computer are talking about ... information exchanged between a VGA monitor and a video card, [Ken Shirriff] began by lopping a VGA cable in two.

Feeling nostalgic we presume, [Glen Kleinschmidt] set out to build a 640x480x64 VGA controller card from discrete logic ... Check out his analog computer “bouncing ball” project we covered ...

The VGA card in the computer is cabled to the pass-through circuit on the high-res adapter. When high-resolution is not used, the card's driver causes the VGA signals to pass through to the monitor.

A plug-in card in a desktop computer that performs graphics ... graphics controller, VGA adapter and VGA card have all been terms for the plug-in board that creates the screen images.