A Brief History of Computer Science - World Science Festival

2700-2300 B.C. The Sumerian Abacus first appeared.
87 B.C. The Antikythera mechanism, the earliest known analog computer is developed in ancient Greece.
1703 A.D. German mathematician Gottfried Wilhelm Liebnitz introduces the binary number system.
1837 Charles Babbage invents the Analytical Engine.
1843 Ada Lovelace develops the first computer algorithm.
1936 Alan Turing invents the Turing Machine.
1941 Konrad Zuse invents Z3, the first programmable digital computer.
1947 The transistor is invented at Bell Labs.
1963 Douglas Engelbart invents the computer mouse.
1968 DARPA creates ARPAnet, the first operational computer network and ancestor of the Internet. 
1971 Kenbak-1, the first personal computer is sold in the USA.
1976 Steve Wozniak designed the Apple-1, a single-board computer for hobbyists.
1981 IBM introduces its first MS-DOS Computer. 
1985 Microsoft releases Windows 1.0.
1990 Sir Tim Berners-Lee of CERN invents the WorldWideWeb.
1993 Marc Andresson created Mosaic, later known as Netscape, the first popular, user-friendly Web browser.
2008 IBM supercomputer "RoadRunner" reaches the speed of 1 petaflops.
2010 Researchers are able to manipulate "qubits", quantum computing information units.
2012 Scientists cultivated brain cells of a microchip, advancing neurochip technology.