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Computer components

Computer components. Skills : none

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Computer components

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  1. Computer components Skills: none IT concepts: computer components (input devices, output devices, memory, storage and CPU), network application vs. stand-alone application, information flow, operating system, application program, program file vs. data file, embedded system, general purpose computer, RAM, ROM, hardware cost trend This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. Where does this topic fit? • Internet concepts • Applications • Technology • Implications • Internet skills • Application development • Content creation

  3. Computer components CPU Input devices Memory Output Devices Storage devices

  4. Input devices

  5. Output devices

  6. Storage devices

  7. CPU and memory

  8. Let’s trace the information flow in a word processing, a stand-alone application.

  9. Power is off Store both data and program files Store both the OS and application programs Operating system WP Prog DB Prog SS Prog

  10. Power on – copy OS to memory (bootstrap) Operating system Operating system WP Prog DB Prog SS Prog

  11. OS displays the login screen Keyboard Display Operating system Operating system WP Prog DB Prog SS Prog

  12. After login, OS displays the desktop Display Operating system Operating system WP Prog DB Prog SS Prog

  13. What happens when we write, print and save a word processing document?

  14. Copy word processing program into memory Mouse Display Operating system 1 WP Prog 2 Operating system WP Prog DB Prog SS Prog

  15. WP program displays a blank document Display Operating system WP Prog Operating system WP Prog DB Prog SS Prog

  16. Enter and display the document Keyboard Mouse Display Operating system WP Prog WP Doc Both programs and data Operating system WP Prog DB Prog SS Prog

  17. Print the document Mouse Printer Operating system WP Prog WP Doc Operating system WP Prog DB Prog SS Prog

  18. Save the document Mouse Display Operating system WP Prog WP Doc Operating system WP Prog DB Prog SS Prog WP Doc

  19. Turn power off Operating system WP Prog DB Prog SS Prog WP Doc

  20. Things with computers inside (embedded)

  21. Special purpose computer General purpose computer Programs in fixed, read only memory (ROM) Programs in volatile, random access memory (RAM)

  22. A few questions

  23. Where does the Internet fit in our system diagram?

  24. The Internet is Input and Output device

  25. What is the input device on the iPad tablet computer? What other input and output devices would you like to see on a tablet computer?Is the storage capacity of your computer greater or less than the memory capacity?What is the cost trend for memory, storage and CPU chips?Why would you want more memory on your next computer?Why would you want more storage on your next computer?

  26. Computer components Skills: none IT concepts: computer components (input devices, output devices, memory, storage and CPU), network application vs. stand-alone application, information flow, operating system, application program, program file vs. data file, embedded system, general purpose computer, RAM, ROM, hardware cost trend This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  27. Connectivity speed in context CPU 8 GB/s Internet download 4 Mb/s Memory 1 Mb/s Internet upload 30 plus MB/s Storage device

  28. HD, Win XP desktop HD, Win Vista laptop SSD, Win 7 laptop ATTO disk benchmark: SSD speed increase

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