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Computer History 1
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Invention of Pascaline
Blaise Pascal invents Pascaline, it had 8 movable dials on wheels and could calculate numbers up to 8 figures long. Modeled after the abacus, and, much like the abacus, it could only preform addition and subtraction. -
Leibniz invents calculator
Gottfried von Leibniz invented a calculator that was able to add, subtract, multiply, and divide. -
Jacquard Invents Weaving Cards
Joseph Jacquard, a French weaver, discovered that weaving instructions could be stored in a card with holes punched in it. This was later used to store information in some of the first computers. -
Babbage desgins two calculating machines
In the early to mid 1800s Babbage designed two calculating machines, the difference engine and the analytical engine. The difference engine could preform complex opperations such as squaring numbers. The analytical engine included an input device, data stroage, a control unit that allowed procesing instructons in any sequence, and output devices, but both were only blueprints. -
Herman Hollerith invents calculating machine
Hollerith invents a calculator for US Census that ran on electricity and stored data on punched cards. Hollerith founded the Tabulating Machine Company which later became known as IBM. -
Mark I built
The first computer was built jointly by Harvard University and IMB. Punched cards fed data into the machine which was 52 feet long, weighed 50 tons, and had 750,000 parts. -
ENIAC was created
Electronic Numerical Integrator and Calculator was built at the University of Pennsylvania. It contained 18,000 vacuum tubes and weighed 30 tons. -
UNIVAC
Universal Automatic Computer was built and sold to the U.S Census Bureau. -
FORTAN and COBOL created
The first two programming languages are created. -
Microprocessor invented
An entire CPU on a single chip was created. -
First Apple computer built
Stehpen Wozniak and Steven Jobs created the first Apple computer in their garage. -
IBM introduces PC
IBM introduces its Personal Computer (PC) -
Clones of IBM PC released
The clones of IBM's PC make it even more affordable to have a PC.
