By this essential need, the pressure of having a standard method that everyone will abide and understand, the abacus was used. This emerged about 5000 years ago in Asia Minor and this could be considered the first computer. The abacus was used as a mechanical aid, used for counting. The person actually performing the calculations did it in their head and the abacus was used just to keep track of the sums, the carries and so on.

The next significant step forward came about 12 centuries later. In 1642 Blaise Pascal (1623 – 1662), the 18-year-old son of a tax collector invented what he called a numerical wheel calculator in order to help his father with his taxation duties. It was made of brass and was also known as the Pascaline. It used eight dials to add numbers eight digits long. It worked on base ten, as 1 dial moved ten notches or 1 complete revolution, the next dial will move a notch. Obviously limitation of this machi

Some topics in this essay:
Internet ARPANET, Entscheidungs Turing, Herman Hollerith, Difference Engine, David Hilbert, Blaise Pascal, Computer Society, Astronomical Society, Countess Lovelace, Telephone Laboratories, difference engine, world war, punched cards, move unit left, provability mathematical, relay machines, unit left, move unit, princeton university, 1815 â€, bell telephone laboratories, babbage difference engine, write erase,