Computer Architecture

Introduction of computer architecture:

Computer Organization and Architecture is the study of internal working, structuring and implementation of a computer system.

Some definitions of  architecture define it is describing the capabilities and programming model of a computer but not a particular implementation. 

1. Memory: Memory enables the computers to store, at least temporarily, data and programs.
2. Mass storage device: Allows a computer to permanently retain large amounts of data.Common classic mass storage devices include disk drives and tape drives.The latest being  the Hard Disks and USB mass storage devices.
3. Input device: The most usual input devices are a keyboard and mouse. They are used to put in data and instructions to computer.
4. Output device: The most usual output devices are display screens such as Monitor which are of several types now a days and a printer, or other device that lets us see what the computer has accomplished.
5. Central processing unit (CPU): This can be called brain of the computer which actually executes the instructions.

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