system memory之Random Access Memory (RAM)
来源:互联网 发布:主人网络是什么意思 编辑:程序博客网 时间:2024/04/29 22:16
Random Access Memory (RAM)
The kind of memory used for holding programs and data being executed is called random access memory or RAM. RAM differs from read-only memory (ROM) in that it can be both read and written. It is considered volatile storage because unlike ROM, the contents of RAM are lost when the power is turned off. RAM is also sometimes called read-write memory or RWM. This is actually a much more precise name, so of course it is hardly ever used. :^) It's a better name because calling RAM "random access" implies to some people that ROM isn't random access, which is not true. RAM is called "random access" because earlier read-write memories were sequential and did not allow random access. Sometimes old acronyms persist even when they don't make much sense any more (e.g., the "AT" in the old IBM AT stands for "advanced technology" :^) ).
Obviously, RAM needs to be writeable in order for it to do its job of holding programs and data that you are working on. The volatility of RAM also means that you risk losing what you are working on unless you save it frequently.
RAM is much faster than ROM is, due to the nature of how it stores information. This is why RAM is often used to shadow the BIOS ROM to improve performance when executing BIOS code. There are many different types of RAMs, including static RAM (SRAM) and many flavors of dynamic RAM (DRAM).
- system memory之Random Access Memory (RAM)
- RAM (random access memory) 随即存贮器
- system memory 之Static RAM (SRAM)
- system memory之Dynamic RAM (DRAM)
- system memory之Memory Access and Access Time
- system memory之Memory Speed, Access and Timing
- 为什么叫随机存取存储器(Random Access Memory)?
- system memory 之 Memory Technology Types
- system memory之Read-Only Memory (ROM)
- system memory之The Memory Controller
- system memory之The Memory Bus
- 铁电存储器 - Ferroelectric Random Access Memory(FRAM)
- System memory,AGP memory和video memory
- System memory,AGP memory和video memory
- System memory,AGP memory和video memory
- system memory之Asynchronous and Synchronous DRAM
- video memory、AGP memory、system memory and write-combing memory
- [PHP] Shared memory access
- 中国最美丽的小山城---------长汀~!
- MSN使用过的个人消息
- System Memory 1
- system memory 之 Memory Technology Types
- system memory之Read-Only Memory (ROM)
- system memory之Random Access Memory (RAM)
- system memory 之Static RAM (SRAM)
- system memory之Dynamic RAM (DRAM)
- system memory之Memory Speed, Access and Timing
- system memory之The Memory Controller
- system memory之Memory Access and Access Time
- asp.net中窗口相关操作总结(javascript)
- 按字符串中的数字排序问题
- Windows下JAVA环境变量的设置祥解