History or evolution of computer

History/ evolution of computer:

• 2400 BC: Abacus, the first known calculator was invented in Babylonia. It was major step toward ‘the era of computing’ that was to follow.
• 1614: John Napier designed the system of moveable rods, which used algorithms to perform the basic mathematical operations.
• 1822: Churls Babbage devised “Difference Engine”. In 1842, Babbage came out with his new idea of “Analytical Engine”. He is the father of computer.
• The mark-I computer(1937-1944): Also known as Automatic Sequence Controlled Calculator, this was the first fully automatic calculating machine designed by Howard A. Aiken of Harvard University, in collaboration will IBM corporation.
• 1945: John von Neumann described a stored architecture, for the fast time even this architecture was the heart of the computer systems developed thereafter. He is the father of modern computer.
• 1946: The Ballistics Research Laboratory of the US came up with the ENIAC (Electronic Numerical Integrator and Calculator). It was the first generate purpose electronic computer.
• 1949: EDSAC (Electronic Delayed Storage Automatic Calculator) was the first computer to use stored program. The machine was developed by a group of scientists headed by Professor Maurice Wilkes, at the Cambridge University Mathematical Laboratory.
• 1951: UNIVAC (Universal Automatic Computer) was the first commercial computer. It was the first digital computer which was not ‘one of a kind’.
• 1955: Bell Labs introduce its first transistor computer. Transistor made computers energy-efficient.
• 1969: The US department of defense founded the ARPANET (Advanced Reach Project Agency Network). It was established with intent of develop a computer network and is the predecessor of the Internet.
• 1971: Microcomputer come up micro-processors at Intel, introduced 4-bit 4004.
• 1973: A minicomputer that was called Xeroy Alto developed.
• 1981: The American National standards Institute (ANSI) was found.
• 1982: Intel announced the 80286 processor.
• 1985: Intel announced the 80386 processor.
• 1990: WWW (World Wide Web) was found.
• Till date: The development of newer versions of computer systems continues.