Choose the proper words to fill in the blanks.(选词填空) Words to be chosen from:(可选词) generally microcomputer functions microprocessor CPU Personal Computer A personal computer, or PC, is a type of (1) designed for the use by only one person at a time.(2) , a PC is a small digital computer constructed around a (3), which is a semiconductor chip that contains all the arithmetic, logic, and control circuitry needed to perform the (4) of a computer’s central processing unit (5 ).