Abacus Counting System
Who invented the computer, which is part of everyday use? To get to this point we need to start back at the time, where it all began!
The earliest form of counting device would be the Tally Stick, but the one we all remember from our childhood days would be the Abacus first used in Babylonia in 2400BC.
The Astrolabe and the Antikythera Analog Mechanical Computers, were used in Ancient Greece in 150-100BC to perform astronomical calculations. The Panisphere in AD1000 by Abu Rayhan al-Biruni. The Equatorium by Abu Ishaq Ibrahim al–Zarqali in AD1015 and the Astronomical Clock Tower of Su Song during the Song Dynasty AD1090.
In 1617, John Napier Scottish mathematician and physicist invented the Napier Bones, a device similar in appearance to that of an abacus, which could perform multiplication and division calculations. In the 1620’s the Slide Rule was…
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