Random Access Memory (RAM) is a form of computer memory, also called memory, which can be read and changed in any order, and is usually used to store work data and machine code. All programs in the computer run in the memory, and the strength of the memory performance affects the computer's overall performance. As long as the computer starts running, the operating system will transfer the data that needs to be calculated from the memory to the CPU. The operation of the memory will determine the speed of the overall operation of the computer. It is the storage space that the CPU can directly address and is made of semiconductor devices. The characteristic is that the access rate is fast. Random-access memory can be divided into static random access memory and dynamic random access memory.