这只是第一题而已，呵呵，如有高人请留下QQ或者邮箱，还有几道题呢，呵呵
Computers are electronic devices that can follow instructions to accept input, process that input,
and produce information. There are four types of computers: microcomputers, minicomputers,
mainframe computers, and supercomputers. Microcomputers, also known as personal computers,
are small computers that can fit on a desktop. Portable microcomputers can fit in a briefcase or
even in the palm of your hand. Microcomputers are used in homes, schools, and industry. Today
nearly every field uses microcomputers. One type of microcomputer that is rapidly growing in
popularity is the portable computer, which can be easily carried around. There are four categories
of portable computers.
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