#There is a small part of the memory used to store basic information of the system. The CPU only reads and does not write to them. The English abbreviation of this part of the memory is ROM.
ROM is the abbreviation of Read-Only Memory. It is a solid-state semiconductor memory that can only read out previously stored data. Its characteristic is that once the data is stored, it cannot be changed or deleted. Usually used in electronic or computer systems that do not need to change data frequently, and the data will not disappear when the power is turned off.
The manufacturing cost of this memory is low. It is often used for startup in computers such as boot CDs. When the system is installed on the computer, the computer reads the operating system files in the C drive directory into the memory, and then Various accessories are called through the CPU to perform work. At this time, the system stores the memory as RAM.
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