Choose the proper words to fill in the blanks.（选词填空）Types of ComputerComputer can be generally classified by size and power as following, though there is considerable overlap among them.A refers to a small, single-user computer based on a microprocessor, with a keyboard for entering data, a monitor for displaying information, and a storage device for saving data.A is a powerful, single-user computer, which, though looking like a microcomputer, has a more powerful microprocessor and a higher-quality monitor.A stands as a multi-user computer capable of supporting from 10 to hundreds of terminals（终端）or users simultaneously（同时地）.A ,synonymous with “giant”, is the name for a powerful multi-user computer which supports hundreds of thousands of users at the same time.A describes an extremely fast computer that can perform hundreds of millions of instructions per second.Words to be chosen from:（可选词）Supercomputer, minicomputer, mainframe, workstation,personal computer