Thursday, 13 March 2008

Whats required for using graphical images? P1

MOUSE
A mouse is the key way of communicating with the computer itself. Without the mouse you are not able to manipulate graphical images.

SCREEN
This is where the operating system can be shown to the user in a GUI,

GRAPHIC TABLET
This is a mouse replacement, pressure sensitive pen and tablet. It works more efficiently than a mouse. You can customise pen buttons to any mouse button or invoke commands such as Undo, Copy, Paste. You can use the pen to draw or trace. A graphic tablets allow the user to work in a powerful, time saving way .

DIGITAL CAMERA
A digital camera allows you to electronically import a version of the picture to the computer. A digital camera allows you to take more of the picture that you actually see with a high mega pixel size.

SCANNER
Scanners can be used to convert text documents or photographs into digital files.

FLASH CARDS
Flash cards are storage for many portable objects which are often used to store the photos from digital cameras.

USB
The USB is portable and can be taken to any computer that has a USB, they are used for storing files from office files to images.

HARD DRIVE
The hard disk drive (HDD) is a magnetic drive that stores a great amount of data that is fixed on to the hard drive. A hard drive
is a non-volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces.

GRAPHICS CARD
This is the component that puts the images on to the monitor. There are many different types of graphics card from different generations, and different years. An easy way to see if I graphics card is any good is by the memory of which it holds (cash) and the clocking speed of the card and its refresh rate.

PROCESSORS
The processor, is the component in a digital computer capable of executing a program, and controls everything and gives the computer all of its instructions to run the operating system.