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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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