INFORMATION TECHNOLOGY (IT)‏. INFORMATION SYSTEMS What do the information system do? Information systems collect, organize, store, process, retrieve and.

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Presentation transcript:

INFORMATION TECHNOLOGY (IT)‏

INFORMATION SYSTEMS What do the information system do? Information systems collect, organize, store, process, retrieve and display information in different formats (text, video and voice). What does IT allow? Very fast, automated manipulation of digital data and their transformation from and to analogue.

TWO BASIC TECHNOLOGIES responsible for the development of the necessary HARDWARE INTEGRATED CIRCUITS DIGITAL COMMUNICATIONS

SOFTWARE What do easy-to-use software products do? They create, maintain, manipulate and query files and records. Without software, computers are just dumb boxes, unable to perform any calculations or operations.

Another important factor is…? Development of COMPUTER NETWORKS.

MODELS AND TYPES OF COMPUTER DESKTOPLAPTOPMAINFRAMENOTEBOOKSERVERTERMINALWORKSTATION

COMPUTER HARDWARE CPU (CENTRAL PROCESSING UNIT) ‏ DOT MATRIX PRINTER EXPANSION CARD INKJET PRINTER KEYBOARD LASER PRINTER MONITORMOUSE RAM (RANDOM ACCESS MEMORY) ‏ SCANNERSCREEN STORAGE DEVICES

SOFTWARE APPLET APPLICATION SOFTWARE BROWSER DATABASE SOFTWARE SOFTWARE GRAPHIC SOFTWARE OPERATING SYSTEM SEARCH ENGINE SPREADSHEET WORD PROCESSING

NETWORK A network includes:  techniques  physical connections  computer programmes Network users can:  share files, printers and other resources  send electronic messages  run programmes on other computers

Explain the following words PROTOCOLGATEWAYWWWINTERNETDATABASE

NETWORK CONNECTIONS BANDWIDTHBAUD BITS PER SECOND (bps) ‏ OPTICAL FIBRE PACKETRECEIVESIGNALTRANSMIT TRANSMISSION SPEED TWISTED PAIR

NETWORK OPERATION CONFIGUREDOWNLOADHACKHUBINSTALL INTERNET SERVICE PROVIDER (ISP) ‏ LOCAL AREA NETWORK (LAN) ‏ SWITCHTRANSMITUPLOAD WEB PAGE WEBSITE WIDE AREA NETWORK (WAN) ‏ WIRELESS

Literature used: N. Brieger & A. Pohl: Technical English