![]() He was looked after by two young brothers from a religious movement just outside Rouen. In that year his father injured his leg and had to recuperate in his house. However production of the machines started in 1642 but, as Adamson writes in ,īy 1652 fifty prototypes had been produced, but few machines were sold, and manufacture of Pascal's arithmetical calculator ceased in that year.Įvents of 1646 were very significant for the young Pascal. ![]() Pascal had to solve much harder technical problems to work with this division of the livre into 240 than he would have had if the division had been 100. The system remained in France until 1799 but in Britain a system with similar multiples lasted until 1971. There were 20 sols in a livre and 12 deniers in a sol. There were problems faced by Pascal in the design of the calculator which were due to the design of the French currency at that time. You can see pictures of the Pascaline at THIS LINK and at THIS LINK. This, almost certainly, makes Pascal the second person to invent a mechanical calculator for Schickard had manufactured one in 1624. The device, called the Pascaline, resembled a mechanical calculator of the 1940s. He worked on it for three years between 16. Pascal invented the first digital calculator to help his father with his work collecting taxes. Shortly after settling in Rouen, Blaise had his first work, Essay on Conic Sections published in February 1640. In December 1639 the Pascal family left Paris to live in Rouen where Étienne had been appointed as a tax collector for Upper Normandy. You can see pictures of the Mystic Hexagram at THIS LINK. It contained a number of projective geometry theorems, including Pascal's mystic hexagon. At the age of sixteen, Pascal presented a single piece of paper to one of Mersenne's meetings in June 1639. ![]() Soon, certainly by the time he was 15, Blaise came to admire the work of Desargues. Mersenne belonged to the religious order of the Minims, and his cell in Paris was a frequent meeting place for Gassendi, Roberval, Carcavi, Auzout, Mydorge, Mylon, Desargues and others. He discovered that the sum of the angles of a triangle are two right angles and, when his father found out, he relented and allowed Blaise a copy of Euclid.Īt the age of 14 Blaise Pascal started to accompany his father to Mersenne's meetings. Blaise however, his curiosity raised by this, started to work on geometry himself at the age of 12. Étienne Pascal decided that Blaise was not to study mathematics before the age of 15 and all mathematics texts were removed from their house. Blaise Pascal's father had unorthodox educational views and decided to teach his son himself. In 1632 the Pascal family, Étienne and his four children, left Clermont and settled in Paris. Blaise's mother died when he was only three years old. Biography Blaise Pascal was the third of Étienne Pascal's children and his only son. ![]()
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