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What this article shares to you is about how to solve the memory that cpu cannot access directly. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

The memory that cpu cannot access directly is external memory (memory independent of the computer's memory and CPU's cache). The reason why it can not be accessed directly: the speed of CPU is fast, but the speed of external memory is slow. If CPU is allowed to access external memory, CPU will waste a lot of time waiting for external memory to return data.

The memory that cpu cannot access directly is external memory. The memory that cpu can access directly is internal memory (memory).

Because the speed of CPU is fast, while the speed of external memory is slow, if CPU is allowed to access external memory, CPU will waste a lot of time waiting for external memory to return data. The reading and writing speed of memory is much higher than that of external memory, so the data on storage media such as hard disk must be adjusted to memory before it can be accessed.

Memory is the bridge between external memory and CPU, and all programs in the computer are run in memory.

The function of memory is to temporarily store the operational data in CPU and the data exchanged with external memory such as hard disk. As long as the computer is running, the operating system will transfer the data that needs to be calculated from memory to CPU for operation. When the operation is completed, CPU transmits the results, and the operation of memory also determines the stable operation of the computer.

Extended data:

External storage refers to the storage in addition to computer memory and CPU cache, which can still hold data after power off. Common external memories are hard disk, floppy disk, CD, U disk and so on.

The biggest advantage of external memory is that it can be mobile. Through the external memory, we can easily transfer the data stored in it to another device. This provides great convenience to our work and life.

Like mobile phones, external memory is a must for professionals and students. However, compared with the internal memory, although the external memory has the advantages of cheap and easy to carry, it also has some disadvantages.

For example, in the data transmission speed, because the operation of the external memory mainly depends on mechanical components, so the gap between the external memory and the internal memory is relatively large. There is also a big gap in the data transmission speed between external memories with different prices and different quality.

The memory size of the external memory on the market already has several T's of mobile hard drives. Can fully meet the needs of life and work. And for the capacity is not so large requirements, you can choose a smaller capacity U disk, generally also has 16G of memory. And the size is also smaller than the hard drive, there are many shapes to choose from.

The above is how to solve the memory that cpu cannot access directly. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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