Hardware - Peripherals - Output Devices
VDUs - Screen Resolution


The standard user interface on the PC was originally a text-only mode. With the increased resolution of VDUs applications are now written in graphics mode using individual pixels. A recent standard has been 640 x 480 pixels on the screen (this is called VGA) and the present standard is 800 x 600 (called SVGA).


Diagram of different screen resolutions

This has enabled the use of an increasingly sophisticated visual interface, utilising graphical user interfaces (GUIs) such as Microsoft Windows and MAC OS as well as more highly developed user friendly software.