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Computer Graphics P1

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on 20 January 2014

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Transcript of Computer Graphics P1

This will be a presentation on the hardware and software hat is needed for computer graphics. these includes components such as graphics cards and processors for example.
Computer Graphics P1
Computer Graphics Unit 30
Generates output images to a display. In graphics this is used to display what you are creating with the output devices that you are using through the graphics software and programs. better graphics cards lead to better quality images and the amount of information that can be displayed on the screen.
Holds programs while they are running (when using the software it might be stored in the cache for faster access). Everything on your computer uses RAM. If you have insufficient RAM, you run the risk of your computer crashing and even software damage. Therefore RAM is important in graphics since if you do not have enough you could lose all the work that you have created or damage software that is vital to your graphics work.
(e.g. Corel Draw, Visio, Adobe Illustrator).
This software allows the creation of vector images. This software uses complicated algorithms to be able to create these images. These algorithms allow the image to not lose its focus when scaled which if they were bitmap images, would lose their focus. Also vector images are a lot smaller in file size than bitmap images.
(Paintshop pro, Paint).
This software allows you to create bitmap images which includes the creation of individual pixels to make up and image. This can be from a very small amount to a very large amount. With the more pixels included into the image the better quality the image will be.
The types of hardware that is needed for computer graphics are:
Graphics Card
RAM
Processor
Motherboard
Storage (CDROM,USB,Hard Drive)
Input Devices (Mouse,Keyboard,Graphics Tablet,Scanner)
Output Devices (Monitor,Printer)
Hardware
Software
Vector Graphics
Bitmap Software
Graphics Card
RAM
Processes all the instructions/actions. This piece of hardware is vital in graphics since without this you would not be able to create the things you want to with ease since it processes all you commands you put into the computer rather than you having to write out text command lines for it to complete what you want it to do.
Processor
This piece of hardware holds all the vital components that are needed for computer graphics and allows them all to communicate with one another to allow them all to function in the correct and effect way.
Motherboard
(e.g. CD-ROM, hard drive, USB storage devices). This allows you to save what you have accomplished in your graphics work including images for example to keep it safe and be able to load it up again if you want to alter or edit the work you have created.
Storage
Input Devices
Printer:
Used for printing images. Two main types; inkjets and laser.

Monitor:
Used for displaying images; screen size important when displaying graphics (resolution).
Output Devices
(Photoshop, Photoshop elements).
This software allows the editing of bitmap images. This software would not be able to edit vector images since that would require the user to edit the algorithm which is a very difficult thing to do.
Photo Manipulation Software
(Clipart, drawing tools).
These facilities can either be bitmap or vector graphics based. Clipart is usually vector graphics and will not loose its focus where as for example drawing tools will either use vector or bitmap graphics where the line created will either be made out of pixels or a complicated algorithm.
Graphics Facilities Embedded Within Other Application Packages.
(Image viewers, photo galleries).
These tools allow the user to view the pictures they have saved or created, both vector and bitmap images if that specific software is compatible with both types.
Image Tools.
The types of software that is needed for computer graphics are:
Dedicated vector graphics software.
Dedicated bitmap software.
Dedicated photo manipulation software.
Graphics facilities embedded within other application packages.
Other image tools.
Mouse: This input device allows precise control for the user. It is also very versatile and can be implemented into software in many ways from letting it to be used a pen, to a device to move the camera.

Keyboard: This input device allows the user for the quick use of shortcuts that graphics software makes available. It also allows the user to add text to their graphics work or images if they intend to. Also the keyboard can be used for specific commands if the user knows those specific commands such as code.

Graphics Tablet: This input device allows the user to have more control of drawing tools such as pen tools and brush tools in software. It allows them to free draw onto the tablet and the tablet with transfer that information to the software to create an images.

Scanner: This input device allows the user to scan in an a physical image into the computer onto specific software that will copy and create that image on the software.
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