What does the computer CPU mainly consist of?

Central Processor CPU

CPU is the heart of the computer system, computer, especially the rapid development of micro-computer, is essentially the CPU from low-level to advanced, simple one-way complex development process.

First, the concept of the CPU

CPU (central processing unit) is also called CPU, its main function is to perform operations and logic operations, the internal structure can be divided into control unit, arithmetic logic units and storage units and several other parts. According to the processing information of the word can be divided into: eight-bit microprocessor, 16-bit microprocessor, 32-bit microprocessor and 64-bit microprocessor and so on.

Second, the main CPU performance indicators

Main frequency: The CPU internal core work clock frequency, the unit is typically megahertz (MHz). This is our usual whether the use or purchase of computers are the most concerned about a parameter, we usually say 133, 166, 450 and so refers to it. For the same kind of CPU, the higher the frequency, the faster the CPU speed, the higher the performance of the machine.

FSB and multiplier: FSB is the external clock frequency of the CPU. FSB is provided by the computer motherboard, CPU frequency and FSB relationship is: CPU frequency = FSB x times the frequency.

Internal caching: The use of extremely fast SRAM production, for the temporary storage of CPU operations, the most recent part of the instructions and data, access speed and CPU frequency, the internal cache capacity in general KB. When it works at full speed, the greater the capacity of the use of the highest frequency of data and results will be easier to enter the CPU as soon as possible, CPU work and the slow access to the external cache and memory Exchange data between the number of times, relative to the computer speed can be improved.

Address bus width: The address bus select、read width determines the physical address space that the CPU can access, simply to say how much memory the CPU can use.

Multimedia extended instruction Set (MMX) technology: MMX is the new technology Intel has taken to enhance Pentium CPUs in audiovisual, graphics and communications applications. This technology adds a whole new 57 MMX instructions to the CPU, and the CPU with the MMX instruction increases the ability to process multimedia by about 60% more than normal CPUs when running programs containing MMX instructions. Even if you do not use the MMX instruction program, you can get about 15% performance improvement.

Microprocessors have changed our lives in many ways, and what we now take for granted is unimaginable in the past. The 60 computer was large enough to fill the entire room, and only a few people could use them. The invention of the 60 's medium-term integrated circuit enabled the miniaturization of the circuits to be realized on a single wafer, laying the foundation for the development of microprocessors. In the foreseeable future, CPU processing capacity will continue to maintain high-speed growth, miniaturization, integration is always the trend of development, but also the formation of different levels of products, including specialized processors.