2019-2020学年度人教版必修二Unit3ComputersPeriod1Reading课件(25张)
2019-2020学年度人教版必修二Unit3ComputersPeriod1Reading课件(25张)第3页

analytical machine(分析机) laptop calculating machine (计算机器) robot PC universal machine(通用机器)

Can you put these inventions in an order according to the time when they appeared?