Computer

Computer:-

         A computer is an electronic machine that do calculations and store information. 

         Computer uses different softwares and programms to do all these tasks..  For example, it has a word processing program for typing letters and a program called a Web Browser for searching and browsing the internet. Computers are of different styles and volumes e.g. laptops, desktops and tablets. All the computers do the same jobs.

Beginnings

         The first programmable computer was designed in  1830s. It was a mechanical computer. Unfortunately it was never built, and it wasn't until World War II that British code breakers built Colossus, the world's first programmable and fully electronic computer.  

         However, Colossus still didn't include a number of elements present in modern computers. Finally  the great mathematician  Alan Turing built the computer after World War II.

From science project to everyday tool

         Earlier only scientists and engineers were interested in computers. But from the human–computer interaction theories of mouse inventor Douglas Engelbart in the 1960s to the release of the Apple Macintosh computer in 1984, they became easier to use and more capable of tasks that ordinary people could carry out.

        Now, with the spread of personal computers (PCs), mobile phones, notebooks and tablets, computers have become part of our everyday lives. It's almost impossible to imagine modern society without them.