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Steam-driven Machine
[Charles Babbage](http://<a href='http://http://www.livescience.com/20718-computer-history.html )Charles Babbage conceives of a steam-driven calculating machine that would be able to compute tables of numbers. -
Punch Card System
[Herman Hollerith](http://<a href='http://http://www.livescience.com/20718-computer-history.html )Herman Hollerith designs a punch card system to calculate the 1880 census, accomplishing the task in just three years and saving the government $5 million. -
Building the first Computer
J.V. AtanasoffJ.V. Atanasoff, a professor of physics and mathematics at Iowa State University, attempts to build the first computer without gears, cams, belts or shafts. -
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Graphical User Interface (GUI)
GUIDouglas Engelbart shows a prototype of the modern computer, with a mouse and a graphical user interface (GUI). This marks the evolution of the computer from a specialized machine for scientists and mathematicians to technology that is more accessible to the general public. -
DRAM chip
DRAM chipThe newly formed Intel unveils the Intel 1103, the first Dynamic Access Memory (DRAM) chip. -
Personal Computers
(1974-1977) A number of personal computers hit the market, including Scelbi & Mark-8 Altair, IBM 5100, RadioShack’s TRS-80—affectionately known as the “Trash 80,” and the Commodore PET. -
Single-Circuit Board
Single Circuit BoardSteve Jobs and Steve Wozniak start Apple Computers on April Fool’s Day and roll out the Apple I, the first computer with a single-circuit board. -
"Acorn"
AcornThe first IBM personal computer, code named “Acorn,” is introduced. It uses Microsoft’s MS-DOS operating system. It has an Intel chip, two floppy disks and an optional color monitor. Sears & Roebuck and Computerland sell the machines, marking the first time a computer is available through outside distributors. It also popularizes the term PC -
HTML
HTMLTim Berners-Lee, a researcher at CERN, the high-energy physics laboratory in Geneva, develops HyperText Markup Language (HTML), giving rise to the World Wide Web.