精选优质文档-倾情为你奉上Unit 1 Ex. 1根据课文内容回答问题(1) A general-purpose computer has four main sections. They are the arithmetic and logic unit (ALU), the control unit, the memory, and the input and output devices, collectively termed I/O. They are interconnected by busses, often made of groups of wires.(2) The control unit is often called a control system or central controller. (3) Read the code for the next instruction from the cell indicated by the program counter. Decode the numerica
