History of computer development 5th century BC, Chinese invented the abacus. It is widely used in commercial trade, and this is the first calculation tool. It’s also considered the prototype of a computer. Until the 17th century, computing devices have a second important step forward. In 1666, Samuel Morland who was English ，invented the addend and subtrahend machine. 1832, Babbage and Joseph Clement made a computing device. It’s Size nearly as big a house. January 1943: In the United States, An advanced computer was developed which weighs 5 tons, 75 million parts. These computers are mainly used in the war began.1987: A supercomputer release, which can made 200 million operations per second. At present, the type of computer has a lot of friends, according to the computer’s processing speed classification, It can be divided into five types：supercomputers,mainframes,minicomputers,workstations and microcomputers "Who invented the computer?” The real answer is that many inventors contributed to the history of computers. The development of computers reflects the wisdom of modern humans. What do you usually do on the computer? 译文： 计算机的发展史 公元前5世纪，中国人发明了算盘。它被广泛应用于商业贸易，这是第一次的计算工具。 它也被认为是一台电脑的原型。直到17世纪，计算设备的第二个重要的一步。1666年，塞缪尔·莫兰德是英国人，是加数和减数机的发明者。1832年，巴贝奇和约瑟夫·克莱门特发明了计算设备。它的大小几乎一样大的房子。1943年1月：在美国，开发了先进的计算机，它重达5吨，75万件。这些电脑主要用于在战争开始。1987年：一个超级版本，它可以每秒运算200万。目前，计算机的类型有很多朋友，根据计算机的处理速度分类，可分为五种类型：超级计算机、大型机、小型机、工作站和微型计算机。 “谁发明了计算机？”真正的答案是，许多发明家计算机的历史贡献。计算机的发展，反映了现代人类的智慧。 你通常用计算机做什么？ 本文来源：https://www.wddqw.com/doc/eb786dfd770bf78a65295467.html