Information about Information

The processed data is called information. Information is an organized and processed form of data. It is more meaningful than data and is used for making decisions. Data is used an input for the processing and information is the output of this processing. This information can be used again in some other processing and will be considered as data in that processing. For example,  marks of a student in different subjects is the data. To...

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History of Computer

History of Computer Computer was invented because “necessity is the mother of invention”. Man always searched for a fast calculating device. It took a long time to invent the digital computer. A brief history behind the invention of computer is as follows: Abacus             Abacus was first computing device. It was developed 5000 years ago. It was used to perform simple addition and subtraction. Abacus was a wooden...

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Generations of Computer

Generations of Computer            The development of electronic computers can be divided into generations depending upon the technologies used. The generations of computers are as follows:·         First generation                    (Vacuum tube)                            1942-1955·        ...

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Definetion of C.P.U

 Define C.P.U. C.P.U           C.P.U stands for Central Processing Unit.C.P.U is a highly complex set of electrical circuits that executes stored program instructions. It is also known as brain of computer.C.P.U can be divided into two main parts.       Control Unit       Arithmetic and Logical Unit How many types of computer are there uses? There...

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Characteristics of Computer

Following are the important characteristics of a computer:1.       Speed               Computers work at a very high speed and are much faster than humans. A second is very large time period time for computer. A computer can perform billions of calculations in a second. The time used by a computer to perform an operation is called the processing speed. Computer speed is measured in Mega Hertz (MHz) or Giga Hertz...

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Categories of Computer

Categories of Computer              Normally, computers are categorized on the basis of size, speed, processing power and price. However, categorizing computers is not very straight-forward. The distinction between these categories is sometimes not very clear. Some characteristics overlap different categories. Computers can be divided into the following categories:1 Personal Computers / Micro Computers            ...

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Boot Order Enter BIOS Keys

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