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century XVII
Just before dying, the Scottish mathematician John Napier (1550-1617), famous for his invention of logarithms, developed a system to perform arithmetic operations by manipulating rods, which he called "bones" as they were built with bone material or ivory, and in which were embodied the digits. Given its nature, the system is called "Napier's bones". Napier's bones had a strong influence on the development of the slide rule and subsequent machines calculators, which counted with logarithms. -
century XVII
The first mechanical calculator was designed by Wilhelm Schickard in Germany. Called " calculating clock ", the machine joined Napier's logarithms , rolling cylinders in a large hostel. -
century XVII
The first slide rule was invented by English mathematician William Oughtred . The slide rule (called "Circles of Proportion ") was a set of rotating discs that were calibrated with Napier's logarithms . S -
century XVII
Blaise Pascal invented the Pascaline . With this machine , the data is represented by the positions of the gears. -
century XVII
Samuel Morland invented the first machine to multiply in the court of King Charles II of England. The apparatus consisted of a series of wheels , each of which representing tens, hundreds, etc. . A steel pin moving dials to perform the calculations. -
century XVIII
Charles Stanhope (third Earl of Stanhope) (Charles Mahon) invents the first logical machine "software demonstrator." It was a handheld device that solved syllogisms traditional and basic questions of probability. Mahon is the precursor of the logical components in modern computers. -
century XVIII
The Frenchman Joseph Marie Jacquard, used punched cards mechanism to control the pattern formed by the threads of fabrics made by a knitting machine . -
century XVIII
At 19 years old, Herman Hollerith was hired as an assistant in the office of the U.S. Census and developed a computer system using punch cards in which the holes representing information about the sex or age , among others. -
century XVIII
developed his Comptometer Dorr Felt , which was the first calculator that operated by pressing keys rather than , for example, slide wheels. -
century XVIII
La primera máquina exitosa de multiplicación automática se desarrolló por Otto Steiger. "El Millonario", como se le conocía, automatizó la invención de Leibniz de 1673, y fue fabricado por Hans W. Egli de Zurich. -
century XX
American Lee De Forest invented the vacuum tube. The " Audion " as it was called , had three elements within an evacuated glass bulb . The elements were able to find and amplify radio signals received by an antenna . -
century XX
Start of the second generation of computers, characterized by using transistor circuits instead of vacuum tubes . -
century XX
Corning Glass Works Company sold the first commercial fiber optic cable . -
century XX
Robert Thomas Morris created the first computer virus called Creeper. He attacked an IBM Series 360 machine. In order to exterminate the Reaper virus which is considered by many as the first antivirus is created. -
century XX
Company is founded Microsoft . -
century XX
Toru Iwatani , the company Namco, make the game Pacman -
century XX
Compaq puts retail with Compaq Presario , and was one of the first manufacturers in the mid -nineties with the sale of PC less than U.S. $ 1,000 . -
century XX
Internet2, faster than the original Internet was created. -
century XX
Microsoft releases the first version of MSN Messenger. -
century XXI
Computers renew much more, now are equipped with better programs. your system is very advanced and are now much more portable. -
Middle Ages
The Persian mathematician and engineer Musa al-Khwarizmi (780-850), invented the algorithm, ie, methodical problem solving algebra and numerical calculation using a well-defined, finite and orderly operations to find the solution to list problem.
