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Computer Concepts

Computer Concepts. Computer Information Systems. Explain the functions of computer system components. Describe the information processing cycle. Describe various computer input & output devices. Describe various auxiliary storage devices. Describe wireless and mobile devices.

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Computer Concepts

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  1. Computer Concepts Computer Information Systems

  2. Explain the functions of computer system components. • Describe the information processing cycle. • Describe various computer input & output devices. • Describe various auxiliary storage devices. • Describe wireless and mobile devices. • Identify basic networking components. Course Competencies

  3. Functions of Computer System Components

  4. Central Processing Unit (CPU) • Brain of a computer • Executes program instructions Processor

  5. Main Memory / Primary Storage • Used during information processing cycle • Lost when computer powers off Memory

  6. Any peripheral (piece of hardware equipment) used to provide data to the computer • Mouse, keyboard, camera, scanner Input Devices

  7. Any piece of hardware used to communicate the results of data processing • Speakers, printer, monitor Output Devices

  8. Secondary Storage • Not directly accessible by CPU • External hard drive, USB flash drive, memory card Storage

  9. Information Processing Cycle

  10. Parts of the Information Processing Cycle

  11. Role in the Information Cycle

  12. What is the purpose of the information processing cycle as it relates to computer systems? The main function of a computer system is to process information.

  13. Input, Output, andStorage Devices

  14. Storage device • Optical disk – uses light / lasers • Often used for music, text files, and photos • Read-only vs. rewritable CD / DVD

  15. Storage • Stores large data sets • Connects by USB port External Hard Drive

  16. Storage device • Convenient & portable • Fast! • Easy to erase / rewrite USB Flash Drive

  17. Input device • Used to enter text information into the computer Keyboard

  18. Input device • Records sound & digitizes it to be stored in the computer for playback Microphone

  19. Output device • Provides a visual display from the computer Monitor

  20. Input device • Handheld pointing device that controls the on-screen cursor Mouse

  21. Output device • Produces a computer image on paper • InkJet vs. LaserJet Printer

  22. Input device • Images a printed page or graphic by digitizing it Scanner

  23. Output device • Converts electric current into sound format Speakers

  24. Input & output device • Touch-sensitive display screen on which a user can make choices by pressing button images Touch Screen

  25. Wireless & Mobile Devices

  26. Wireless & Mobile Devices

  27. Basic Networking Components

  28. Computer designed to process requests and deliver data to other computers over a local network or the Internet • Central repository of data and various programs that are shared by other users in a network Server

  29. Expansion card that enables a computer to connect to a network • Most computers now have built-in NICs Network Interface Card (NIC)

  30. Join multiple networks together • Able to filter traffic by analyzing IP addresses of senders and receivers Router

  31. Joins multiple computers together within one local area network • Inspects data and determines the source & destination Switch

  32. Protects a computer network from unauthorized access • Also limit access to the outside from internal users Firewall

  33. Questions?

  34. 3 different input devices • 2 auxiliary storage devices • 1 basic networking component Exit Ticket!

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