Who Invented The Abacus Calculator

The young french mathematician blaise pascal 1623 1662 invented the first adding machine in 1642 a clever device driven by gears and capable of performing mechanical addition and subtraction. Excluding the abacus or slide rule the first mechanical calculator was invented by french inventor blaise pascal in 1642. An adapted abacus invented by tim cranmer called a cranmer abacus is still commonly used by individuals who are blind.

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The history of abacus dates back to nearly 2500 years back.

Who invented the abacus calculator. The word abacus is derived from the greek abax meaning counting board and the original types of abacus were stone slates with dust covering them and a stylus used for marking numbers. A modern replica of a roman hand abacus from 1st century ce. Later this evolved into. The principle was simple a frame holding a series of rods with ten sliding beads on each.

In 1622 william oughtred used these two inventions together and invented the slide rule which lasted until modern times when the scientific calculator became popular in the early 1970s. Although it is unknown precisely who invented the abacus the device was developed in china around 3000 b c. It consisted of a small metal tablet with parallel grooves usually nine of them each corresponding to an order of units in which spherical counters slid. Abacus has traveled a long way and had transitions as it traveled through different countries.

In the very beginning of course was the abacus a sort of hand operated mechanical calculator using beads on rods first used by sumerians and egyptians around 2000 bc. It could add or subtract two numbers or divide and multiply by repetition using geared wheels. It is highly compact and easy to use and forms the basis for modern calculators and computers. The roman abacus was similar to the greek one see the upper photo.

The abacus was invented in the ancient empire of mesopotamia approximately in the year 3000 bc. Although there is no reliable evidence that credits a specific person as its creator its invention is attributed to the mesopotamian culture in general. The original compact calculator was the abacus developed in china in the ninth century. The word abacus comes from a greek word abax or abakon meaning tabular form possibly derived from a semitic word abq or sand it is the most primitive form of calculating device invented somewhere between 300 and 500 bc.

A piece of soft fabric or rubber is placed behind the beads so that they do not move inadvertently. The abacus is an ancient mathematical instrument used for calculation it is one of the world s first real calculating tools.