cpu（电脑主机）what's the cpuPronounced as separate letters it is the abbreviation for central processing The CPU is the brains of the Sometimes referred to simply as the central processor， but more commonly called processor， the CPU is where most calculations take In terms of computing power， the CPU is the most important element of a computer On large machines， CPUs require one or more printed circuit On personal computers and small workstations， the CPU is housed in a single chip called a Since the 1970's the microprocessor class of CPUs has almost completely overtaken all other CPU The CPU itself is an internal component of the Modern CPUs are small and square and contain multiple metallic connectors or pins on the The CPU is inserted directly into a CPU socket， pin side down， on the Each motherboard will support only a specific type or range of CPU so you must check the motherboard manufacturer's specifications before attempting to replace or upgrade a CPU Modern CPUs also have an attached heat sink and small fan that go directly on top of the CPU to help dissipate Two typical components of a CPU are the following:The arithmetic logic unit (ALU)， which performs arithmetic and logical The control unit (CU)， which extracts instructions from memory and decodes and executes them， calling on the ALU when See "What Is CPU Overclocking?" in the "Did You K?" section of WAlso see All About Dual-Core Processors in the "Did You K?" section of WTo understand how your computer system communicates with your CPU， see "Understanding PC Buses" in the Did You K?" section of W
