Dr. C. Jayawardena New entrance 2013 New entrance 2013

Computer System People Software Hardware People Software Hardware

Software Programs Set of instructions that directs the hardware to do a required task and produce the desired results

Hardware -Basic Components

Function of Computer System Input Process Output Input Process Output

Input devices Accept data or commands and convert them to electronic form Getting data into the computer –Typing on a keyboard –Pointing with a mouse –Scanning with a bar-code reader –Terminal

Output devices Monitor or screen Text Numbers Symbols Art Photographs Video Printer Black and white Color Convert from electronic form to some other form May display the processed results

Getting Connected User’s computer must connect to a server

What can we do with computers ? Webster dictionary Free dictionary Learn English

What can we do with computers ? m

Some useful websites for Dentistry related information epages/19395.htm ndex.htm

Introduction to browsing & e mails Web search engines

 The peon needs a address to deliver letter  Network needs the same; address bar o http o www

Google Search using Google Search for ‘hand washing techniques’

Key in the search terms in the search box

Use advanced search to perform a more specific search

E.g. To retrieve information on hand washing techniques published only in English

A PowerPoint presentation on hand washing techniques published in English

A PowerPoint presentation on hand washing techniques published in English published by a university… Hint: Universities are in academic.ac or educational.edu domains

Add bookmarks Help you to open websites without searching

Pubmed: for publications in relation to medicine

Use of CAL-room 200 MB for each student Restrict only for academic purposes

Write your e mail address in the given sheet