[rom制作工具] 【rom定制教程】rom基础知识(一) [复制链接]（[rom production tools] [ROM custom tutorial] ROM basic knowledge [copy link]）.doc

[rom制作工具] 【rom定制教程】rom基础知识(一) [复制链接]([rom production tools] [ROM custom tutorial] ROM basic knowledge (1) [copy link])
[ROM production tools] [ROM custom tutorial] ROM basic knowledge (1) [copy link]
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[ROM customized tutorials] section 1 ROM Basics
A. Noun interpretation
1. ROM, RAM, Flash Memory
The full name of ROM (Read Only Memory) is read-only memory, which is the hard disk part of PPC for storing and saving data. ROM data can't be updated at any time, but it can be read at
any time. Even if the power is off, ROM can keep the data. However, once data is written, it can only be changed by special method or can not be changed at all. Therefore, ROM often acts as storage system in embedded system
The full name of RAM (Random Access Memory) is the random storage memory, which is the mobile storage part of PPC, which is used to store and save data. It can read and write at any time. RAM is usually used as an