Nearly all scanning software programs can write to a PCX file, some offering limited color depths. This is the way your desktop monitor, color televisions, film recorders, slide makers, and even some printers produce colors. This file format is a video capture format. A standard developed by engineers at Microsoft and Aldus. There are many variations of this file format that can support true color, gray scale, as well as, monochrome.
TIFF files can take up a great deal of hard disk space.
Vector - Vector art is a collection of objects like lines, circles, rectangles, or letters of the alphabet. Unlike bitmaps, vector art is not made up of dots. Vector art is made up of outlines which form boundaries much the same as those drawn on a piece of paper. These objects can be sized, filled, outlined, etc. with little effort by selecting that particular object on the page. Vector programs are used to create drawings and technical illustrations that would be difficult, if not impossible to perform in a paint program.