写一篇简述电脑的英语短文

里面要有电脑的发展史、种类、用途和优缺点。越短越好（用英语）

Computer is the most famous invention now. It has many advantages and disadvantages.
For the good side, first of all, it’s so convenient that we can use it to do our account. The second, as the developing of internet, computers made our world smaller and smaller. Third, we have a lot of fun with computers; it’s really useful for us.
For the disadvantages, first, we spend more time before computers and less time on communications with others, it makes our society colder. Then, within the inventing of online games, many children trapped in the games and give up their study. It’s a serious problem. The last, now scientists have found that computers are somewhat harmful to our health.
Generally speaking, computer is very important to our life though it’s not a perfect invention