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This document summarizes key hardware components of a computer system including the system unit, central processing unit, memory types, data representation using binary digits, input/output devices, display devices, system clock, optical discs, and control units that carry out basic operations like fetching, decoding, executing, and storing instructions. It also lists sources in a bibliography.
Powerpoint comp ed[1]
- 1. Chapter 4Hardware For EducatorsAshley SabatTeresa WoodsJennifer Veras
- 2. The system unitBox like case made out of metal or plastic that houses the electronic components. Examples:
- 3. CPR Central Processing Unit- important chip in the motherboard
- 4. CPR- carries instructions that operate a computer. (Also referred as a processor)Hardware Components Used For: Input
- 5. Processing
- 6. Output
- 7. StorageControl units4 basic operations: Fetch- guidelines from memory
- 8. Decoding- translate instructions into orders
- 9. Executing- carries out commands
- 10. Storing- writes outcome into memory2 Types Of Memory RAM- Random Access MemoryRAM is Volatile, data stored in RAM are erased when the power to the computer is turned off. Volatile-lost when the computer turns off
- 11. ROM- Stores info that does not change. (Read Only Memory)
- 12. Nonvolatile- not lost Data RepresentationA computer only understands digital “ON” and “OFF”.
- 13. These two states are represented by electronic circuits that represent by 1 or 0.
- 14. Using the Binary system equals 2 digits.
- 16. Creates over 256 characters, provides combinations of 0’s and 1’s.
- 17. 8 bits= a byteFlash Memory:Nonvolatile memory can be erased and rewritten on.
- 18. Input Any item entered into the memory of the computer.4 Types: Data
- 19. Commands
- 21. User ResponseOutput DevicesData that has been processed into useful form called information. 4 types; Text
- 22. Graphics
- 23. Audio
- 24. Video Display Devices The core most monitors are made up of cathode ray tube. (CRT)
- 25. A pixel a single point electronic image.System Clock System clock- reins the timing of all computer operations.
- 26. Clock speed- measured GHz
- 27. Giga- one billion
- 28. Hertz- cycle per second
- 29. 4 GHz-four billion, ticks in one secondOptical Discs CDs and DVDs
- 30. R-recordable
- 31. CD-RW
- 32. CD-R
- 33. CD-ROM
- 34. DVD Bibliography - Shelly, Cashman, Gunter. “Integrating Technology and Digital Media in the Classroom.” Chpt 4. Hardware for Educators. 2009 Cengage Learning. INC; Pg 202-239 inc.- Expert Village. “Computer Hardware Information : What Makes a Computer Work?” Online posting. Youtube, November 9th, 2008. Web. November, 30, 2010
Editor's Notes
- #2: http://www.youtube.com/watch?v=EvIZWKh0KbY