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Computing Fundamentals

Computing Fundamentals. Unit 4- Networks, Printers, Monitors. Objectives. Identify what a network is. Describe the benefits of a network. Identify ways to connect to a network. Compare & contrast a client-server network and a peer to peer network. Describe a LAN. Describe a WAN.

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Computing Fundamentals

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  1. Computing Fundamentals Unit 4- Networks, Printers, Monitors

  2. Objectives • Identify what a network is. • Describe the benefits of a network. • Identify ways to connect to a network. • Compare & contrast a client-server network and a peer to peer network. • Describe a LAN. • Describe a WAN. • Describe the Internet • Compare & contrast an Intranet & Extranet.

  3. Computer Networks • Computers need to communicate with each other • 2 or more connected devices • Share files & resources • Standards allowed them to “speak the same language”

  4. Network Benefits • Central Storage of files • Share files, resources, printers • Maintain network centrally • Secure • Backup

  5. Network Disadvantages • Unauthorized shared data • Network failure • Easy to spread malicious programs & viruses • Loss of privacy

  6. How do you connect to a network? NIC, Router, Modem Connecting

  7. Client-Server Computers & devices connect to a server How Networks Connect 1

  8. How Networks Connect 2 • Peer to Peer • Router allows devices to connect to each other • Also allows shared Internet connection

  9. At Home • Comcast Cable Modem • Through cable TV wire • High Speed Broadband • Verizon DSL • Over phone line • High Speed Broadband • Limited distance • Verizon FiOS • Over fiber cable line • High Speed Broadband • Limited areas

  10. How Can You Tell? • Look at Modem’s WAN or INTERNET port • Comcast • Cable Wire • Verizon DSL • Connects to Phone Jack • Filter on phones • Verizon FiOS • Cable Wire • Dial-Up • Computer modem to phone jack

  11. Assignment • What Do You Have at Home?

  12. Networks • LAN • Local Area Network • Devices connected in small area • This classroom, this school, your house

  13. Networks • WAN • Wide Area Network • Connects LANs • Over a large geographic area

  14. Internet • Originally for government • Largest network • What’s the most commonly used feature on the Internet? • Email • Email is stored on a server • NOT ON PC

  15. Review • What device allows the sharing of Internet access? • Router • What is the purpose of a network? • Sharing files & resources • How many wires are in an Ethernet cable? • 8 • What does LAN stand for? • Local Area Network

  16. Intranet • Looks like Internet • Private • Only works w/in company network • Great security • Handbooks, forms, news, policies

  17. Intranet Screenshot

  18. Extranet • Private • Allows outside organization to access internal info • Extension of intranet • Outside suppliers • Employees • Strict security • Username & password

  19. Extranet Screenshots

  20. Review • A room of 5 connected computers describes a… • LAN • To connect to a network, your PC must have a… • NIC • This type of “Internet” is for internal use only within a business. • Intranet End of Day Two

  21. Printers • Output device • DPI • Dots per inch • More dots= better quality • 4800 x 1200 (H x V) • PPM • Pages per minute • Black & Color speeds • Color is slower

  22. Printers • Dot Matrix • Pins hammer into ink ribbon • Connected paper with guide holes • Not good quality • Slow & noisy

  23. Inkjet Printers • Nozzles spray ink • Good quality • Quiet • Fast • Inexpensive

  24. Laser Printer • Laser writes to drum • Toner • Thousands of pages • Fast • Extra paper trays • Duplexing

  25. Other Printers • All-In-One • Print, copy, fax, scan • Inkjet & laser • Plotter • Large paper • Drafting, posters

  26. More About Printers • Networking on some • Wired & wireless • Print from any PC • Make money from ink & toner • Printer: $50 • Ink Cost: $6 • Price You Pay: $20-$30

  27. Monitors • Measured in pixels • Resolution 1024 x 768 • CRT • Big & bulky • LCD • Thin • Less energy

  28. Review • For faster printing would you use a dot matrix or inkjet? • Look up your ink or toner.

  29. Computing Fundamentals Unit 4- Networks, Printers, Monitors

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