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The abacus
算盤
The abacus was perhaps the first type of computer.
算盤或許算是（世上）第一款計(jì)算機(jī)了。
People started using it over 4,000 years ago to do maths.
人們?cè)缭?4000 年前就開始使用它來做算術(shù)了。
It was used in ancient China, Rome, Egypt and Greece.
它在古代中國，羅馬，埃及和希臘都有被使用。
Today some people still use the abacus.
今天，還有些人在使用算盤。
