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Презентация на тему Printer and scanner

Printer
printer and scanner Completed the presentationKononova EkaterinaPST-11 Printer Printer - is an external computer peripheral device designed to display text or graphics. Types of printers Liquid inkjet printersoperate by propelling variably sized droplets of Types of printers Laser printerThis printing method, called electrograph first, then - Scanner Scanner - device which, by analyzing an object, creates a digital copy History Modern scanners are considered the successors of early telephotography and fax The types of scannersDesktop scanner3D scanners collect data on the three-dimensional shape
Слайды презентации

Слайд 2 Printer

Printer

Слайд 3 Printer - is an external computer peripheral device

Printer - is an external computer peripheral device designed to display text or graphics.

designed to display text or graphics.


Слайд 4 Types of printers
Liquid inkjet printers
operate by propelling variably

Types of printers Liquid inkjet printersoperate by propelling variably sized droplets

sized droplets of liquid ink onto almost any sized

page.

Thermal printers work by selectively heating regions of special heat-sensitive paper.

Line printers, as the name implies, print an entire line of text at a time.


Слайд 5 Types of printers
Laser printer
This printing method, called

Types of printers Laser printerThis printing method, called electrograph first, then

electrograph first, then - xerography and today more commonly

known as laser printing, designed for speed, efficiency and high quality print

Jet printer
The principle of an inkjet printer is similar to the action of the matrix: the image is created from points. Only heads with needles instead of matrix used in these ,which prints the liquid dyes.


Слайд 6 Scanner

Scanner

Слайд 7 Scanner - device which, by analyzing an object,

Scanner - device which, by analyzing an object, creates a digital

creates a digital copy of the image object. The

process of obtaining this copy is called scanning.

Слайд 8 History
Modern scanners are considered the successors of early

History Modern scanners are considered the successors of early telephotography and

telephotography and fax input devices.

The pantelegraph (Italian: pantelegrafo; French:

pantélégraphe) was an early form of facsimile machine transmitting over normal telegraph lines developed by Giovanni Caselli, used commercially in the 1860s, that was the first such device to enter practical service.

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