With the advancement of science and technology, human life has become more and more developed, computers have entered everyone's family, and computers have been fully integrated into people's lives. With the development of computers, more and more portable, operating systems are coming. The more humanized, but the operating system has a difference? What is the 32-bit and 64-bit operating system brought to you today, I believe many of my friends can't understand what 32-bit and 64-bit operating systems are, so what is it? 32-bit and 64-bit operating systems, the following small series on a detailed introduction: What is the 32-bit and 64-bit operating system 32-bit and 64-bit operating system means that the CPU's ability to process data at one time is 32-bit or 64-bit This is related to the number of processor operations. Simply put, the address bus of the 32-bit system is 32-bit, and the address bus of the 64-bit system is 64-bit. For this sentence, many friends may not understand it. In fact, it may be obvious if we look down. Currently, the processors we can buy are basically 64-bit system processors, but the 64-bit here is not a theoretically true 64-bit processor, because the current AMD and Inter 64-bit CPUs are not really The 64-bit CPU has only partially improved 64-bit, such as 64-bit memory addressing, and still maintains 32-bit majority technology. This is related to the memory addressing problem of 32-bit and 64-bit systems. In fact, this is also a very different difference between 32-bit systems and 64-bit systems. Generally speaking, 32-bit CPU is the most rational CPU for us, and it is also the platform for most software development and design. The maximum memory addressing space of 32-bit system in memory addressing is 2 to 32 power = 4294967296 (bit) = 4 (GB) or so. The maximum memory addressing space of a 64-bit system is 2 to the 64th power = 4294967296 (bit) of the 32nd power = the value is greater than 100 million GB. This means that processors in 32-bit systems only support up to 4G of memory, while 64-bit systems support up to 100 million bits of memory. If the current processor is all 64 bits of theory, then the software on the market will be completely eliminated or all need to be redesigned. Obviously this is impossible, and it will take quite some time to develop. The current 64-bit operating system is designed for 64-bit CPUs, adding some 64-bit instructions, but still compatible with 32. For our average user, the 64-bit system is of little significance. The real 64-bit technology is developed for large machinery or large service stations. At present, we can see in the market that some win7 systems use a 64-bit operating system. In fact, it is not theoretical. It is just a 64-bit improvement on a small piece of memory addressing. We can also see the current Some win764-bit systems are compatible with 32-bit, but some game software cannot be installed, so I don't recommend installing 64-bit systems at this time. The difference between the 32-bit and 64-bit operating systems is very obvious. The above also said that the maximum supported memory size is different, the address bus design is different, etc. The following is briefly summarized as follows: First, the original intention of the design is different. The 64-bit operating system was originally designed to meet the needs of customers who require large amounts of memory and floating point performance in areas such as mechanical design and analysis, 3D animation, video editing and authoring, and scientific computing and high performance computing applications. In short, the words are: they are the operating platform for high-tech personnel to use the special software of this industry. The 32-bit operating system is designed for the average user. Second, the configuration is different. The 64-bit operating system can only be installed on a 64-bit computer (the CPU must be 64-bit). At the same time, 64-bit commonly used software needs to be installed to achieve the best performance of 64-bit (x64). The 32-bit operating system can be installed on a 32-bit (32-bit CPU) or 64-bit (64-bit CPU) computer. Of course, the 32-bit operating system is installed on a 64-bit computer, and its hardware is just like "big horse car" ": 64-bit performance will be greatly reduced. Third, the computing speed is different. 64-bit CPUGPRs (General-PurposeRegisters, general-purpose registers) have a data width of 64 bits. The 64-bit instruction set can run 64-bit data instructions, which means that the processor can extract 64-bit data at a time (as long as two instructions are extracted, 8 at a time. The byte data) is doubled compared to 32 bits (requires four instructions, extracting 4 bytes of data at a time), and theoretically the performance is doubled. Fourth, the addressing capabilities are different. The advantages of 64-bit processors are also reflected in the system's control of memory. Since the address uses a special integer, an ALU (Arithmetic Logic Operator) and registers can handle larger integers, which are larger addresses. For example, WindowsVistax64Edition supports up to 128GB of memory and up to 16TB of virtual memory, while 32-bit CPUs and operating systems can only support up to 4G of memory. Fifth, software popularity is different. Currently, 64-bit commonly used software is much less than 32-bit commonly used software. The reason is simple: there are relatively few users using a 64-bit operating system. Therefore, software developers must consider the “input-to-output ratio” to invest limited funds into the software of more users. This is also an important reason why 64-bit software is relatively expensive. With the development of computers, more and more portable, the operating system is becoming more and more user-friendly, but the operating system has a voice difference? Xiaobian introduced here I believe that everyone has a certain understanding of 32-bit and 64-bit operating systems, operating system Progress is increasingly affecting your life, more and more convenient operating systems, and more and more tools to help you learn and play in the office. Choosing what system is your own choice, for the current operating system, has developed very mature