Computer Graphic Hardware

Graphics cards/accelerators

What is a graphic's card?

A modern graphics card is a circuit board with memory and a dedicated processor is designed specifically to handle the intense computational requirements of displaying graphics. Most of these graphics processors have special command sets for graphics manipulation built right into the chip.

 

Graphics cards are known by many names, such as:

 

 

Why do we need a Graphics Card?

 


The graphics card plays an essential role in the PC. It takes the digital information that the computer produces and turns it into something human beings can see. On most computers, the graphics card converts digital information to analog information for display on the monitor; on laptops, the data remains digital because laptop displays are already digital.

 

 

Three Graphics Card Components

Here are the three basic components of a graphics card and what they do:

 

 

 


Advantages of Using a Graphics Cards

Though every PC has a video card that sends images from your programs to the monitor, some of these video cards are also accelerator cards. Simply put, with an accelerator, images get to, and move about, your monitor more quickly.

 


Examples of cards:

ATI ATI's dual monitor Radeon VE ($99)

 Memory: 32MB
 Maximum number of colors at maximum resolution: 32-bit
 Connectors: DVI-I, VGA, S-Video
 Compatible operating systems: Windows 98, Windows 2000, Windows Me

 

 

Matrox Matrox Millennium G550 ($125)

 Memory: 32MB
 Maximum refresh rate at maximum resolution: 85 hz
 Maximum number of colors at maximum resolution: 32-bit
 Connectors: VGA, DVI, cables for TV out, video out, S-Video out
 Compatible operating systems: Windows 98, Me, NT 4.0, 2000, XP

 

 

Hercules The Hercules 3D Prophet 4500 ($150)

 Memory: 64MB
 Maximum refresh rate at maximum resolution: 75 hz
 Maximum number of colors at maximum resolution: True color
 Connectors: VGA
 Compatible operating systems: Windows 95, 98, 98SE, Me, 2000, XP

 

 

Creative Creative Labs' 3D Blaster Annihilator2 Ultra ($500)

 Memory: 64MB
 Core clock speed: 250 MHz (very fast)
 Maximum refresh rate at maximum resolution: 75 hz
 Maximum number of colors at maximum resolution: 32-bit

 Connectors: VGA

 

 

 

GEForce3 GeForce3 ($349)

 Memory: 64MB
 Maximum refresh rate at maximum resolution: 60 hz
 Maximum number of colors at maximum resolution: 32-bit
 Connectors: SVGA, S-Video, composite video
 Compatible operating systems: Windows 95, 98, 2000, Me, NT 4.0

 

New Innovations


Digital Graphics
Uploading graphics to the computer
Digital image processors
Scanner/Digital Camera
JLIP program
Demonstrate how to transfer graphics to computer (digital imaging)
Save in any form i.e. gifs, jpeg, tiff