Computer Organization; Chapter Two

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Author:
TongaDroid
ID:
212182
Filename:
Computer Organization; Chapter Two
Updated:
2013-04-08 14:13:43
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Introduction Computer Fundamentals Organization Chapter Two
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Introduction to Computer Fundamentals: Computer Organization Chapter Two
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  1. Electronic circuit enables the computer to?
    • Perform arithmetic operations
    • Evaluate logical conditions
    • Process input and output data
  2. Three types of a computer system
    • Processing unit
    • Input device
    • Output device
  3. Processing unit (CPU)
    Processes inputted data, prepare results and produces output.
  4. Input device
    Used for inputting data and instruction into a computer system. E.g. mouse, keyboard
  5. Output device
    Used for displaying results. E.g. monitor, speakers
  6. Central Processing Unit comprises of?


    • Arithmetic Logic Unit
    • Memory (RAM, ROM, Registers)
    • Control unit
  7. Arithmetic Logic Unit
    • Performs simple arithmetic operations (addition,subtraction…..).
    • Necessary to execute instructions.

    *Also makes logical decisions like yes/no true/false*
  8. Memory (RAM, ROM,Registers)
    Stores data/instructions for execution
  9. Control unit


    Fetches data/instructions from memory and determines their type
  10. Types of memory
    • Internal memory
    • External memory
  11. Internal memory


    • Primary (ROM, RAM)
    • Secondary (HDD)
  12. External memory
    Secondary (Floppy, CD-ROM)
  13. What is external memory?
    Externally located, random access memory, that stores data and programs in file format for storage.E.g. HDD, CD-ROM
  14. What is internal memory?
    Located on the motherboard, stores inputted data/instructions for execution and storage for future use.E.g. RAM, ROM
  15. RAM
    Alterable, volatile memory that stores data/instruction that is currently in use.
  16. ROM
    Inbuilt, in alterable, non volatile memory used for system software,which does essential tasks, like POST

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