computer fundamental

Computer Fundamentals

Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use.

    You may already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spreadsheets, presentations, and even videos.

Computer Overview

Functionalities of a computer  
 Any computer carries out five functions:

• Takes data as input.
• Store the data or instructions in its memory and can use them.      ............

Computer Generation 

There aretotally five computer generations known till date. Each generation has been discussed in detail along with their time period, characteristics. We've used approximate dates against each generations which are normally accepted.

First Generation:

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The period of first generation was 1946-1959.  .............



Computer Components

All types of computers follow a same basic logical structure and perform the following five basic operations for converting raw input data into useful information.

Input Unit :

 This unit contains devices which help us enter data into computer. This unit makes link between user and computer.                                            ...........Read More......



Computer Memory

Computer memory is the storage space in computer where data is to be processed and instructions required for processing are stored.  It is used to store data and instructions. 

Memory is primarily of three types:

A. Cache Memory                                                                                                  ..............Read More.......

RAM & ROM 

RAM or Random Access Memory, constitutes the internal memory of the CPU. Since access time in RAM is independent of the address to the word that is, each storage location inside the memory is as easy to reach as other location & takes the same amount of time    .....Read More..