Computers are helpful in many ways. first, they are fast. they work with lot of information much more quickly than a person can. moreover, computers can work with lots of information at the same time. computer can calculate a lot of figures when they manage with lots of documents. third, they keep information for a long time. they do not forget things the way people do. in addition, computers are almost always correct. they do not perfect, of course, but they usually do not make mistakes.