Introduction to Computer

                                   Introduction to Computer

                                                                                 

Computer is an electronic device which is capable of receiving information (data) in a particular form

And performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals.

In general a computer is a digital electronic device or machine which accept data, processes

It and gives information as output. It has several components like Monitor, CPU, Mouse,

Processor,  Memory etc.

                                      History of Computer

                                                           

History of computer can be considered from arise of human culture as person knew the calculation,

they used something for this purpose like  pebbles, stone etc. but as a device Roman’s abacus is first device used in B.C for calculation. In A.D. various mechanical devices were invented for the calculation like Pascaline by Blaise Pascal, Joseph Jacquard invented loom that is “programmed” using punches cards, “Charles Babbage” invented two machines Analytical engine and Difference engine and Hollerith’s

Census Machines (Tabulating machine) . Atanasoff-Berry Computer (ABC) is a fully digital electronic device  used for linear  equation. Howard Aiken (IBM) had designed Mark I, the first operational general purpose electro mechanical computer . John Mauchley and Presper Eckert make the Electronic Numerical  Integrator and Calculator  (ENIAC) first generation purpose digital electronic Computer used to compute a ballistic firing. Universal Automatic Computer (UNIVAC ), was the first commercially successful Computer. Two Era arises Mechanical Era Before (1945) having mechanical devices and the Electronic  Era from  (1945) having electronic processing technology.