Welcome to my presentation
VGA
Video Graphics Array
PRESENTED BY
JANNATUL FERDOUSI
1.OBJECTIVES
2.WHAT IS VGA??
3.HISTORY OF VGA
4.TYPES OF VGA
5.USES OF VGA
6.OUTPUT CAPABILITIES
7.STANDARD GRAPHICS MODES
8.TECHNICAL DETAILS
CONTEXT
OBJECTIVES
TO KNOW WHAT IS VGATO KNOW BASIC THINGS ABOUT VGA
TO KNOW USES OF VGATO KNOW “WHY VGA IMPORTANT FOR COMPUTER”
WHAT IS V G A ??? A Video Graphics Array (VGA) connector is a three-row 15-pin DE-15 connector. The 15-pin VGA connector is found on many video cards, computer monitors, and high definition television sets. On laptop computers or other small devices, a mini-VGA port is sometimes used in place of the full-sized VGA connector. DE-15 is also conventionally called RGB connector,
VGA refers specifically to the display hardware first introduced with the IBM PS/2 line of computers in 1987 but through its widespread adoption has also come to mean either an Amplitude Modulated computer display standard, the 15-pin D-subminiature VGA CONNECTOR OR THE 640x480 resolution itself
History Of VGA
TYPES OF V G A….
D-sub 15, mini sub D15, mini D15, DB-15, HDB-15, HD-15 or HD15 (High Density, to distinguish it from the older and less flexible DE-9 connector used on some older VGA cards, which has the same shell size but only two rows of pins).
Today, the VGA analog interface is used for high definition video , including resolutions of 1080p and higher.
Its makes videos/images colorful
Its makes picture Quality more attractive
Uses Of VGA
Output capabilities
VGA graphics in 640x16 resolution
VGA graphics in 320x200x256 resolution
640x480 in 16 colors or monochrome
640x350 or 640x200 in 16 colors or monochrome
320x200 in 4 or 16 colors320x200 in 256 colors
Standard graphics modes
Technical details
CIRCUITRY DESIGN
VGA compared to other standard resolutions
SPECIFICATIONS
256 KB video RAM16-color and 256-color palette display modes262,144-color global paletteSelectable 25.175 MHz or 28.322 MHz master
pixel clockUsual line rate fixed at 31.469 kHzMaximum of 600 linesRefresh rates at up 70 HzVertical blank interrupt Planer mode up to 16 colorsPacked-pixel mode:256 colorsNo Hardware sprites
connector
VGA BNC CONNECTORS
A D-SUB CONNECTOR
COLOR PALETTE
VGA 256 DEFAULT COLOR PALETTE
HARDWARE MANUFACTURERSATIS3 GRAPHICSMATROXPLANTRONICS TSENG LABSCIRRUS LOGICCHIPS AND TECHNOLOGY
Short statement
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