Dr. C. JayawardenaDr. C. Jayawardena New entrance 2013New entrance 2013

Computer System

• 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 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 ?

http://www.bbc.co.uk/worldservice/learningenglish/language/

Webster dictionary

Free dictionary

http://www.nlm.nih.gov/medlineplus/anatomyvideos.html

http://www.dartmouth.edu/~anatomy/

http://anatomy.med.umich.edu/home.html

http://library.med.utah.edu/neurologicexam/html/home_exam.html

http://nhscience.lonestar.edu/biol/ap1int.htm#brain

Learn English

What can we do with computers ?

http://www.lab.anhb.uwa.edu.au/mb140/

http://www.merriam-webster.com/dictionary

http://ect.downstate.edu/courseware/haonline/quiz/practice/u4/quiztop4.htm

http://www.surgical-tutor.org.uk/default-home.htm

• Some useful websites for Dentistry related information

• http://www.youtube.com/watch?v=B46Djs4E_Z0

http://www.nlm.nih.gov/medlineplus/ency/imagepages/19395.htm http://www.fb4d.com/http://ect.downstate.edu/courseware/haonline/index.htm http://www.lab.anhb.uwa.edu.au/mb140/

Introduction to browsing & e mails

Web search engines

The peon needs a address to deliver letter

Network needs the same; address baro httpowww

Search using GoogleGoogle

• Search for ‘hand washing techniques’

Key in the Key in the search terms search terms in the search in the search boxbox

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 Pubmed: for publications in publications in relation to relation to medicinemedicine

Use of CAL-room

• 200 MB for each student• Restrict only for academic purposes

• Write your e mail address in the given sheet