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13 Sep 2017
ancient babylonians create the abacus
chinese use wire and beads to innovate the abacus.
john napier creates "napiers bones" for calculating multiplication equations for the first 9 multiples of a number.
Charles Xavier Thomas invents the ARTHMOMETER that becomes first mass produced calculator
first electronic calculators invented: Anita MK VII and Anita MK8
hand held electronic calculatorts include popular models canon pocketronic, busicom junior and sharp EL-8.
liquid crystal display (LCD)
first graphing calculator
first cellphones with calculators.
todays calculator is very advanced. blah, blah, blah... (copy)
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