Scanner and printer презентация

Scanner - is an input device that is analyzing an object (usually an image, text) to create a digital copy of the image of the object.

Printer - is an external computer peripheral device designed to display text or graphics information stored in the computer hard physical medium, usually paper

matrix printer consists of:
· The ribbon cartridge,
· System of the print head,
· Supply system and drawing paper,
· A microprocessor control system,
· Mechanical and optical sensors,
· Secondary power source.

The scanner comprises:
light beam
photodetector
engine
matrix