VGA explained

VGA connectors is also called DE15 or HD15

Video Graphics Array (VGA) was developed by IBM in 1987, and can only transport analog signal, it was designed to show a resolution of 640×480 with 16 colors or 320×200 with 256 colors.

XGA was developed by IBM in 1990 and supports 640×480 or 1024×768

The SVGA is a shortcut for Super VGA, and supports 800×600 or 480000 pixels, and 16 million colors, and the SVGA standard is developed by a group of manifacturers that are called VESA (Video Electronics Standards Association)

WXGA supports 1280×800 or 1280×768

SXGA support 1280×1024

VGA connectors has 15 pins:

DE15 pinout - Female

DE15 pinout – Female

1 = Red Video

2 = Green Video

3 = Blue Video

4 = Monitor ID 2

5 = TTL Ground (Monitor self-test)

6 = Red Analog Ground

7 = Green Analog Ground

8 = Blue Analog Ground

9 = Key (Plugged Hole)

10 = Sync Ground

11 = Monitor ID 0

12 = Monitor ID 1

12 = Monitor ID 1

13 = Horizontal Sync

14 = Vertical Sync

15 = Monitor ID 3

Some advise when using VGA:

When using VGA to connect a computer to a screen or projector it is a good advice to use quality shielded cables, if you use cables of less good quality you might experience “ghosting” which is when things starts to look like they have a shadow on the screen, the higher resolution you use the higher risk you have of “ghosting”.

You can hear more about VGA in this 5 minutes video: