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Part 2

Part 2. Networks. Advantages of Network. It Makes the work more flexible an easy Via Network , you can share : Files Applications Disk Storage Space Printers. (Local Area Network) LAN. A type of network that link computers in the same site. (Wide Area Network) WAN.

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Part 2

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  1. Part 2

  2. Networks

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

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

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

  6. Client/Server • 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

  7. Intranet • 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 can be accessed by authorized user

  8. Extranet • 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

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

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

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

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

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

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

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

  16. Advantages Tele Working • Flexibility • Greater ability to focus on task

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

  18. Network System

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

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

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

  22. Asymmetric Digital Subscriber Line ( ADSL ) • A more recent technology which allows more data to be sent over existing copper telephone lines. • 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)

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

  24. Good working environment

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

  26. Good working environment • Your chair : Should be adjustable. If not u are at risk of neck , back , shoulder pain • Your screen : • 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

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

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

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

  30. Computer in our life

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

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

  33. We Can use computer in • Business • Government • Health care • Education

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

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

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

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

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

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

  40. Public information system Announce policy documents

  41. Administration system • Income tax payment • Television license payment

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

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