The abacus
算盘
The abacus was perhaps the first type of computer.
算盘或许算是（世上）第一款计算机了。
People started using it over 4,000 years ago to do maths.
人们早在 4000 年前就开始使用它来做算术了。
It was used in ancient China, Rome, Egypt and Greece.
它在古代中国，罗马，埃及和希腊都有被使用。
Today some people still use the abacus.
今天，还有些人在使用算盘。