计算机专业英语阅读

Unit 33-1 what is a processor§ Word listinstruction:指令 instruction set:指令系统operation：操作符 operand：操作数machine language：机器语言address:地址 megahertz:兆赫control unit：控制部件decode：译码，解码ALU( arithmetic/logic unit) :算术逻辑部件register：寄存器word size：字长repertoire： 计算机指令系统 3-1 what is a processorComputer designers are fond of calling their computers machines, so the instruction set is sometimes referred to as machine instructions and the binary language in which they are written is called machine language! .3-1 what is a processorComputer designers are fond of calling their computers machines, so the instruction set is sometimes referred to as machine instructions and the binary language in which they are written is called machine language! .3-1 what is a processorIn some ways, it is analogous to a telephone switchboard with intelligence because it makes the connections between various functional units of the computer system and calls into operation each unit that is required by the program currently in operation. .3-1 what is a processorIn some ways, it is analogous to a telephone switchboard with intelligence because it makes the connections between various functional units of the computer system and calls into operation each unit that is required by the program currently in operation. .3-2 the storage hierarchy§ Word liststorage hierarchy:存储层次semiconductor storage chip:半导体存储芯片bit:位 DASD(direct-access storage device):直接访问存储设备 SASD(squential-access storage device):顺序访问存储设备 load：加载cache memory:高速缓冲存储器microprogram:微程序 3-2 the storage hierarchyThe principal element is the primary storage section along with other specialized processing and control storage elements that may be found in the CPU.3-2 the storage hierarchyThis high-speed element is used as a “scratch pad” to temporarily store data and instructions that are likely to be retrieved many times during processing.In time, this conversation of ination systems from second-generation to third-generation hardware was written off as the price of progress.