History of Computer

There are many devices which were used to aid computation for thousands of years. Humans learned to count on their hands. The abacus is first computing device in the human history used for arithmetic tasks (calculation). The Roman abacus was used in Babylonia as early as 2400 BC.
A number of astronomical calculators were constructed in ancient and medieval times. There are many inventions made by Abu Rayhan al-Beyruni (c. AD 1000); the Equatorium of Abu Ishaq Ibrahim al-Zarqali (c. AD 1015) the astronomical analog computers of other medieval Muslim astronomers and engineers. Al-khuwarzini is derived basic concept known as Algorithim, while bee basic for the modern computation.
John Napier (1550-1617) designed Napier’s bones, an abacus-like device used for multiplication and division. In 1890, the United States Census Bureau used punched cards, sorting machines, and tabulating machines designed by Herman Hollerith to handle.
In early days of 1940, Scientist develop machine naming ENIAC, EDVAC that were using vacuum tubes.
After 1959 by development in electronics, semi conductors, diodes come on screen. Computer manufacturing companies like IBM use this new technology and make machine like UNIVC II, CDC1604.
In third generation machine integrated circuits (IC) were used. That was 1965 when multiprocessing concept introduced. In 1981 IBM released first Personal Computer (PC). The computer is now being used in each and every field of life not only for calculation but also for controlling other machines and to perform other logical operations.
In 1990 Microsoft released Windows 3.0 that make computer more favorite and easy to use tools. After 1990, there was a great revolution in computer hardware as well as in software field. Concept of large scale integration and very large scale integration introduced in hardware side, plug and play and hot boot future introduced on software side. After 2000 Database management system and artificial intelligence introduced.