Timeline of Computer
“Timeline Of Computer”
600's bc
The abacus is developed in China. It was later adopted by the Japanese and the Russians.
600's ad?
Arabic numbers -- including the zero (represented by a dot) -- were invented in India. Arabic translations of Indian math texts brought these numbers to the attention of the Europeans. Arabic numbers entered Europe by means of Spain around 1000 ad and first became popular among Italian merchants around 1300. Until then, people used the Roman system in western Europe, and the Greek system in the east.
1488
The moveable-type printing press is invented by Johann Gutenburg.
1492
Francis Pellos of Nice invents the decimal point.
c. 1600
Thomas Harriot invents the symbols used in algebra. He also drew the first maps of the moon and discovered sunspots.
1600
Dr. William Gilbert discovers static electricity, and coins the term in De Magnete.
1614
John Napier invents logarithms.
1622
William Oughtred invents the slide rule.
1623
Wilhelm Schickard makes his "Calculating Clock."
1644-5
Blaise Pascal a young French mathematician develops the Pascaline, a simple mechanical device for the addition of numbers. It consists of several toothed wheels arranged side by side, each marked from 0 to 9 at equal intervals around its perimeter. The important innovation is an automatic 'tens-carrying' operation: when a wheel completes a revolution, it is turned past the 9 to 0 and automatically pulls the adjacent wheel on its left, forward one tenth of a revolution, thus adding, or 'carrying'. (Pascal is also a respected philosopher and the inventor of the bus.)
1660
Otto von Gürcke builds first "electric machine."
1674
Gottfried Wilhelm von Leibniz designs his "Stepped Reckoner", a machine similar to Pascal's, with the added features of multiplication and division, which is constructed by a man named Olivier, of Paris. (Leibniz is also a respected philosopher and the co-inventor of calculus.)
1752
Ben Franklin captures lightning.
600's bc
The abacus is developed in China. It was later adopted by the Japanese and the Russians.
600's ad?
Arabic numbers -- including the zero (represented by a dot) -- were invented in India. Arabic translations of Indian math texts brought these numbers to the attention of the Europeans. Arabic numbers entered Europe by means of Spain around 1000 ad and first became popular among Italian merchants around 1300. Until then, people used the Roman system in western Europe, and the Greek system in the east.
1488
The moveable-type printing press is invented by Johann Gutenburg.
1492
Francis Pellos of Nice invents the decimal point.
c. 1600
Thomas Harriot invents the symbols used in algebra. He also drew the first maps of the moon and discovered sunspots.
1600
Dr. William Gilbert discovers static electricity, and coins the term in De Magnete.
1614
John Napier invents logarithms.
1622
William Oughtred invents the slide rule.
1623
Wilhelm Schickard makes his "Calculating Clock."
1644-5
Blaise Pascal a young French mathematician develops the Pascaline, a simple mechanical device for the addition of numbers. It consists of several toothed wheels arranged side by side, each marked from 0 to 9 at equal intervals around its perimeter. The important innovation is an automatic 'tens-carrying' operation: when a wheel completes a revolution, it is turned past the 9 to 0 and automatically pulls the adjacent wheel on its left, forward one tenth of a revolution, thus adding, or 'carrying'. (Pascal is also a respected philosopher and the inventor of the bus.)
1660
Otto von Gürcke builds first "electric machine."
1674
Gottfried Wilhelm von Leibniz designs his "Stepped Reckoner", a machine similar to Pascal's, with the added features of multiplication and division, which is constructed by a man named Olivier, of Paris. (Leibniz is also a respected philosopher and the co-inventor of calculus.)
1752
Ben Franklin captures lightning.