As in society, two people talking in two different langauges will be very confused and the dialog will be near impossible. With the first, all computers may send and receive data, but when a collision occurs, one of the two computers will pause for a random amount of time and try processing again. Ethernet, Appletalk and Token-Ring architectures further define how the data is packaged and transferred. Cables are more than just wiring, they also provide protection for the data being carried within from electrical interference. Twisted Pair is by far the least expensive of the four.
Output is composed by a fine pattern of dots.
Dot-matrix printers are noisy and slow but are greatly effective at printing on multipart forms. These printers are much quieter and faster than dot-matrix and the least expensive graphic quality printers. However, because the ink is neither impressed nor heated output is prone to smudging if touched before it dries. These powerful printers require more service and space than any other printer. Plotter - A plotter is not exactly like the other three because of the way it prints.