2. Part 2

3. Networks

4. Advantages of Network It Makes the work more flexible an easy It Makes the work more flexible an easy Via Network, you can share : Via Network, you can share : Files Files Applications Applications Disk Storage Space Disk Storage Space Printers Printers

5. (Local Area Network) LAN (Local Area Network) LAN A type of network that link computers in the same site. A type of network that link computers in the same site.

6. (Wide Area Network) WAN (Wide Area Network) WAN A type of network that links computers in more than company and link computers in different cities or countries A type of network that links computers in more than company and link computers in different cities or countries

7. Client/Server This term relates to the type of network which resources are kept centrally on the server and used locally by the client. This term relates to the type of network which resources are kept centrally on the server and used locally by the client. The server tends to be very powerful PC while each client workstation The server tends to be very powerful PC while each client workstation

8. Intranet A small version of the Internet A small version of the Internet It's an internal network Using some of Internet services such as Email and Web in one company or one location It's an internal network Using some of Internet services such as Email and Web in one company or one location It can be accessed by authorized user It can be accessed by authorized user

9. Extranet A network that using some of internet services such as Email and Web to share data between organizations A network that using some of internet services such as Email and Web to share data between organizations It can be accessed by authorized users It can be accessed by authorized users

10. Internet A collection of vast global network A collection of vast global network A network that grew out of the American Military A network that grew out of the American Military Later adopted by the educational system. Later adopted by the educational system. Now exploited by the commercial world. Now exploited by the commercial world. World Wide Web (WWW) is just a small part of the Internet as a whole World Wide Web (WWW) is just a small part of the Internet as a whole It provides services such as : It provides services such as : 1- Email 1- Email 2-E_commerce 2-E_commerce

11. WWW World Wide Web World Wide Web A vast collection of linked document that are held on a global network of computer system A vast collection of linked document that are held on a global network of computer system It can be accessed by using web browser It can be accessed by using web browser

12. Email The Letter (E) refers to Electronic The Letter (E) refers to Electronic Via Email you be able to share files between workers in different locations Via Email you be able to share files between workers in different locations

13. E- commerce Is term which relates to buying or selling goods and services via the internet Is term which relates to buying or selling goods and services via the internet

14. Advantages of E-commerce: Service available 24/7 Service available 24/7 E commerce offers access to goods around the clock. E commerce offers access to goods around the clock. Equal delivery to town and country Equal delivery to town and country Right to return defective goods Right to return defective goods Consumer right of suppliers country apply Consumer right of suppliers country apply

15. Disadvantages of E-Commerce The consumer Covers the cost of returning goods The consumer Covers the cost of returning goods It's more difficult to return goods purchased online than goods bought in as shop It's more difficult to return goods purchased online than goods bought in as shop Fraud Fraud

16. Tele working you can work at home and connected To your organization via computer network

17. Advantages Tele Working Flexibility Flexibility Greater ability to focus on task Greater ability to focus on task

18. Disadvantages Tele Working Harder to socially interact with the team member Harder to socially interact with the team member No self discipline No self discipline

19. Network System

20. Public Switched Telephone Network ( PSTN ) Is the public telephone system. Is the public telephone system. Its based on traditional copper wire technology and transmit analogue voice data only. Its based on traditional copper wire technology and transmit analogue voice data only.

21. Public Switched Data Network (PSDN) Is simply the technical name for the telephone system in use today. Is simply the technical name for the telephone system in use today. Can transmit Digital data. Can transmit Digital data.

22. Integrated Services Digital Network ( ISDN ) Allows much faster transfer rates than using modems. Allows much faster transfer rates than using modems.

23. Asymmetric Digital Subscriber Line ( ADSL ) A more recent technology which allows more data to be sent over existing copper telephone lines. A more recent technology which allows more data to be sent over existing copper telephone lines. Requires special ADSL modem. Requires special ADSL modem. Allows data transfer rates of ranging from 0.5 to 8 Mbps when receiving data (downstream rate) and from 16 to 640 Kbps when sending data (upstream rate) Allows data transfer rates of ranging from 0.5 to 8 Mbps when receiving data (downstream rate) and from 16 to 640 Kbps when sending data (upstream rate)

24. Digital Subscriber Line (DSL) DSL technology that allows faster data transfer while still using copper wires. DSL technology that allows faster data transfer while still using copper wires. Speed of send equal to speed of receive. Speed of send equal to speed of receive.

25. Good working environment

26. For user (operator) Using elbow and wrist support Using elbow and wrist support Plenty desk space in which to move the mouse Plenty desk space in which to move the mouse Using mouse mat Using mouse mat Using adjustable chair Using adjustable chair

27. Good working environment Your chair : Your chair : Should be adjustable. If not u are at risk of neck, back, shoulder pain Your screen : Your screen : You use a filter attached to your screen to reduce glare if not you are at risk of eye strain You use a filter attached to your screen to reduce glare if not you are at risk of eye strain Setting approximately 12 from your monitor filter Setting approximately 12 from your monitor filter

28. Your mouse : Your mouse : Use a mouse mat to make the mouse easier to use if not you are at risk of wrist injuries. Breaks : Breaks : Take frequent breaks when using a computer

29. For computer Printer toner cartridge can be recycled Printer toner cartridge can be recycled Computer on stand by mode use less electricity than when running normally Computer on stand by mode use less electricity than when running normally Printed paper can be recycled Printed paper can be recycled

30. Precautions Don t touch the internal parts of computer Don t touch the internal parts of computer More than one computer should not use the same power socket More than one computer should not use the same power socket Faulty cabled shouldn t be repaired with insulating tape. Faulty cabled shouldn t be repaired with insulating tape.

31. Computer in our life

32. Tasks would a human solution be more appropriate than computerized Motivating staff Motivating staff Providing a customer Providing a customer support help support help Select new staff Select new staff

33. Tasks would a computerized solution be more appropriate than human Repetitive Tasks Repetitive Tasks Dangerous Situations Dangerous Situations Generating invoice Generating invoice Carrying out stock Carrying out stock Control Calculating payroll for staff Control Calculating payroll for staff

34. We Can use computer in Business Business Government Government Health care Health care Education Education

35. Computer in business Online banking Online banking Most banks now provide their service online Check your balance Check your balance Electronic Funds Transfer (EFT) Electronic Funds Transfer (EFT) Application for new credit card. Application for new credit card. The customer benefits from 24-hours access to banking service

36. Insurance claim processing Can use computer program to manage insurance functions for instance,we can use computer to store data of policy holder Can use computer program to manage insurance functions for instance,we can use computer to store data of policy holder Calculating premiums Calculating premiums Analyze statistics to estimated premiums Analyze statistics to estimated premiums

37. Airline booking Can use the computer in booking tickets and also you can booking the ticket on line. Can use the computer in booking tickets and also you can booking the ticket on line. Check ticket availability Check ticket availability Purchasing tickets Purchasing tickets

38. Business administrations In the past all transaction done manually, but now all aspects of business administrations system have been computerized Track invoice Track invoice Process orders Process orders

39. Computer in educations Computer based education Student registration system Student registration system Organize student time table Organize student time table Distance learning (Computer Based Training) (CBT) Distance learning (Computer Based Training) (CBT) Using the web for research Using the web for research Researching home work in the internet Researching home work in the internet Using traditional methods Coaching students with learning difficult Coaching students with learning difficult Helping students with career advice Helping students with career advice Provide student counseling Provide student counseling

40. Computer in government Every a few years census details are taken and entered in to large computer database Every a few years census details are taken and entered in to large computer database Store census information Public record system

41. Public information system Announce policy documents

42. Administration system Income tax payment Income tax payment Television license payment Television license payment

43. Electronic paper Electronic documents help to save a paper, while other documents are best be printed

44. Should be distributed electronically Should be printed Help for software applications Planning applications Documents that regularly update Academic certification Documents that need careful proofreading Staff announcement Working drafts of lengthy reports Contract E-mail massage Guarantees