SOFTWARE

The intangible part of computer. It tells what a computer supposed to carry out and how to do it.

A collection of computer programs together with the related data..

Categories of computer

•System software

•Application software

•Programming language

SYSTEM SOFTWARE ; controls and maintains the operations of the computer and its devices.

APPLICATON SOFTWARE; makes users more productive and assists them with their tasks.

PROGRAMMING LANGUAGE; enables people to communicate instructions to a computer

TYPE OF STORAGE

1.Hard drives

2.Flash memories

3.Optical discs

4.Other types

•  tape

•  magnetic stripe cards and smart cards

•  microfilm and microfiche

•  enterprise storage

 

 

  LABEL  PRINTER

Small printer that prints on adhesive-type material

Most also print bar codes

Postage printer has built in digital scale and prints postage stamps

PLOTTER

Sophisticated printer used to produce high quality drawings

Large format creates photo color prints

MULTI FUNCTION PERIPHERAL

Also known as all-in-one device- a single device that provides the functionality of printer, scanner, copy machine and sometimes a fax machine.

THERMAL PRINTER

Generates images by pushing electrically heated pins against heat sensitive paper.

Dye-sublimation printer also called digital photo printer uses heat to transfer dye to specially coated paper.

   

  

MOBILE PRINTER

Small, lightweight,  battery-powered, printer that allows mobile user to print from notebook computer, tablet Pc, or PDA while travelling.

PRINTER VARATIES

IMPACT PRINTERS

Characters/ graphics are formed on the paper by physic contact between ink ribbon and paper

Examples are

1.Dot matrix printer

2.Line printer

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  NON-IMPACT PRINTERS

The sharpness and clarity of printout

PRINTERS

A  printer produces text and graphic or papers.

Printed information is called hard copy.

•Impact printers

•Non-impact printer

•Thermal printer

•Mobile printer

•Label printer

•Plotter

•Multi function peripheral

OUTPUT

Output is a DATA that has been processed into a useful form.

An output device is any type of hardware component that conveys information to one or more people.