If he isn't the inventor, that probably means that somebody else invented it. Look it up on Wikipedia - it seems that the abacus was already used thousands of years ago.d
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Abacus was invented by the Chinesethe abacus was also known as the first computer
is charles babbage a filipino scientist
Charles Babbage invented the automatic calculator.
The abacus has been around for millennia, in various countries. No record of the inventor was made.
The Abacus is ancient and the inventor of the original is unknown. Lee Kai Chen did however invent an improved abacus with a movable decimal point and two auxiliary fields for use in complex operations. This abacus was named after himself.