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Classification of computer All modern computers and computing devices use microprocessors whose speeds and storage  capacities are skyrocketing day by day. The developmental benchmark for computers is now  their size. Computers are now classified on the basis of their use or size:  Desktop  Laptop  Tablet  Server  Mainframe  Supercomputer Let us look at all these types of computers in detail. Desktop Desktop computers are personal computers (PCs) designed for use by an individual at a  fixed location. IBM was the first computer to introduce and popularize use of desktops. A  desktop unit typically has a CPU (Central Processing Unit), monitor, keyboard and mouse. Introduction of desktops popularized use of computers among common people as it was  compact and affordable. The foremost design consideration here was  user friendliness. Laptop Despite its huge popularity, desktops gave way to a more compact and portabl...
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Characteristicsof Computer To understand why computers are such an important part of our lives, let us look at some of its characteristics:  Speed: Typically, a computer can carry out 3-4 million instructions per second.  Accuracy: Computers exhibit a very high degree of accuracy. Errors that may occur are usually due to inaccurate data, wrong instructions or bug in chips – all human errors.  Reliability: Computers can carry out same type of work repeatedly without throwing up errors due to tiredness or boredom, which are very common among humans.  Versatility: Computers can carry out a wide range of work from data entry and ticket booking to complex mathematical calculations and continuous astronomical observations. If you can input the necessary data with correct instructions, computer will do the processing.  Storage Capacity: Computers can store a very large amount of data at a fraction of cost of traditional storage of files. Also, data is safe from normal...
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Introduction Of Computer System

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Computer is an electronic device, which convert a row information into meaningful sense. Computer system provides us various facilities like- Playing Games, Watching Video, Listening Songs etc. The literal meaning of computer is a device that can calculate.  However, modern computers can do a lot more than calculate.  Computer is an electronic device that receives input, stores or processes the input as per user instructions and provides output in desired format. Input –Process –Output Model Computer input is called data and the output obtained after processing it, based on user’s  instructions is called information. Raw facts and figures which can be processed using  arithmetic and logical operations to obtain information are called data.
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