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VGA Video Graphics Array

PRESENTED BY JANNATUL FERDOUSI

7.STANDARD GRAPHICS MODES CONTEXT 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

Objectives TO KNOW WHAT IS VGA TO KNOW BASIC THINGS ABOUT VGA TO KNOW USES OF VGA TO 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,

History Of VGA 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

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).

Uses Of VGA 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

VGA graphics in 640x16 resolution Output capabilities VGA graphics in 640x16 resolution VGA graphics in 320x200x256 resolution

Standard graphics modes 640x480 in 16 colors or monochrome 640x350 or 640x200 in 16 colors or monochrome 320x200 in 4 or 16 colors 320x200 in 256 colors

Technical details

VGA compared to other standard resolutions Circuitry Design VGA compared to other standard resolutions

Specifications 256 KB video RAM 16-color and 256-color palette display modes 262,144-color global palette Selectable 25.175 MHz or 28.322 MHz master pixel clock Usual line rate fixed at 31.469 kHz Maximum of 600 lines Refresh rates at up 70 Hz Vertical blank interrupt Planer mode up to 16 colors Packed-pixel mode:256 colors No Hardware sprites

connector VGA BNC CONNECTORS

A D-SUB CONNECTOR

VGA 256 DEFAULT COLOR PALETTE

Hardware manufacturers ATI S3 GRAPHICS MATROX PLANTRONICS TSENG LABS CIRRUS LOGIC CHIPS AND TECHNOLOGY

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