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An English inventor, Charles Babbage developed the first automatic digital computer in the 1830 and called it the analytical operations, as well as suggest the best option based on its computations.

Computer in 1830

The next step in the evolution of the modern computer can be attributed to the English mathematician and logician, George boole. Boole’s system of binary logic operators (e.g. AND, OR and NOT) became the basis of computer theory and procedures. Even today it is referred to as Boolean algebra.

The first fully electronic digital computer was built by J. Presper Eckert and john W. Mauchly of the university of Pennsylvania, in the 1940 it was called ENIAC(Electronic Numerical Integrator and Calculator) and it became operational in 1946. It was the first digital computer. since then , computer started being applied in almost every area of operation which required precision, speed, calculation and quik results. The first machine, built by Charles Babbage, was quiet bulky and the ENIAC was also quite big. Efforts were directed towards reducing the size of the machine, While still retaining its basic operational ability.

Computer in 1940

And the first major breakthrough came in the 1980 with the fabrication of the IC(Integrated Circuit) a device which consisted of hundreds on a tiny silicon chip, the size of a finger nail. This not only permitted a smaller size, but also higher speed at a lower cost.

Computer in 1980

The next major development was the LSI(Large scale integration) by which thousands of transistors and related devices, could be packed on to a single integrated circuit.

Single integrated circuit computer

In the same sequence, the next step was the use of the VLSI(Very Scale Integration) which has increased the functions of computers and also its memory and storage capacity. Whereas the LSI circuits could contain thousands of components on a silicon chip less than 0.2 inch square, the VLSI circuits could hold hundreds of thousands of parts within the same amount of space.

So ,These developments led to cost reduction, which is probably one of the main reasons why we get to see computers in schools, offices.