a It was only in 1614, when a Scotsman named John Napier published first l table of logarithms, which it uses to simplify and expedite the calculations. The logs were very useful and significantly simplified many calculations, to multiply joined the logarithms of the numbers have multiplied, subtracted to divide and multiply to compute power. Once the calculations made, simply find the antilog of the result and get the solution. The antilog tables are searched in the same way they look in the tables of logarithms. This meant we had to calculate logarithms to make the tables, and therefore also had to perform many calculations.

1. 620, Edmund Gunther invented a formula to use logarithms in a more simple but not so accurate. This involved placing the logs on a straight and multiplications and divisions were made by adding or subtracting segments through a pair of dividers. This is known as the Gunther method, some time after William Oughtred used two sliding scales that called slide rules. The scales of the slide rule graduating as the logarithms of the quantities to be calculated. To read more click here: Josh Harris. a In the seventeenth century there was a division between analog and digital calculators. Found by those who used the slide rule and analog, and that the values obtained with this approximate and Digital were those who used the abacus, since the calculations were performed with this accurate and independent of its physical dimensions, the size of accounts, or the length of the wires. a The slide rule analog computer has been a great success, until in the seventies was replaced by electronic calculators.

a The same inventor of logarithms, John Napier, invented a mechanical device that also called Napier’s bones by the similarity that these were the bones and they were constructed of such material. These devices became very accurate and very economical. Napier also introduced the decimal point, which is used even today to separate the decimal integers. a 1. 4 gear mechanism. Pascal and Leibnitz. The inventor and painter Leonardo Da Vinci, was the one who drew the ideas for a mechanical adding machine. A century and a half after the French mathematician and philosopher of just 19 years old named Blaise Pascal, invented and built in the seventeenth century a mechanism.