These devices are similar to printers, but are generally
vector based in the way that they draw lines and information on the paper.
Vector based means from point to point, in comparison to the way that the majority
of CRT displays are drawn, which is pixel based. Vector based tends to give must
crisper lines and graphics. There are two different sorts of plotter, one where
the paper moves, the other where the paper is stationary.The majority of plotters
use a serial connection to the computer.