The word “computer”comes from word compute, which means to calculate. “A computer is a programmable machine (or more precisely, a programmable sequential state machine) that operates on data and is used for wide range of activities”.
A computer is a tool, which can be used to read and write text, draw and look at images, and send and receive e-mail.
Definition: “An electronic and electromechanical device capable of receiving data, processing the data inputted, and generating theoutput in the form of information”.
Characteristics of Computers
1.Speed : It can calculated millions of calculation in seconds.
2.Accuracy : Computer results are highly accurate.
3. Memory : Computers have a large amount of memory to hold a very large amount of data or information.
4.Programmed Intelligence: They are programmed in such a way that they can perform those operations which have been fed into them
5.5. Diligence: Computer is free from problems like lack of concentration, and confuse like humans.
6. Versatility: We can perform many different types of tasks on computer..
7. Power of Remembrance: Unlike humans, computer can store things for unlimited period of time.
Computer Categories
Super computers :The fastest type of Computer.
Supercomputers are very expensive and are employed for
specialized applications. That require immense amounts of
mathematical calculations. For example, weather forecasting
requires a supercomputer.
Mainframe Computers Mainframe is an industry term for a
large computer. The name comes from the way the machine is
build. And because of the sheer development costs,
mainframes are typically manufactured by large companies such
as IBM, Hitachi. Their main purpose is to run commercial
applications of Fortune 1000 businesses and other large large-scale
computing purposesComputer Categories
Super computers :The fastest type of Computer.
Supercomputers are very expensive and are employed for
specialized applications. That require...