急求翻译~~~~~~~~~~~~~~~~~~~~

RAM is a temporary holding area for data, application program instructions, and the operating system. In a personal computer, RAM is usually several chips or small circuit boards that plug into the motherboard within the computer's system unit.
内存是数据、应用程序指令、操作系统的临时容纳区域。在一个个人计算机中，内存在计算机系统单元中通常是几个插在母板的芯片或者电路板
RAM is the "waiting room" for the computer's processor. It holds raw data that is waiting to be processed, as well as the program instructions for processing that data. In addition,
内存是电脑处理器的“等待间”，它容纳着等待被处理的数据，另外同时也容纳了待处理的程序指令。
RAM holds the results of processing until they can be stored more permanently on disk or tape, and operating system instructions that control the basic functions of a computer system. These instructions are loaded into RAM every time you start your computer, and they remain there until you turn off your computer.
在被更持久性的保存在硬盘或者磁带上之前，内存容纳着计算的结果，而且操作电脑的系统基础功能指令
In RAM, microscopic electronic parts called capacitors hold the bits that represent data. You can visualize the capacitors as microscopic lights that can be turned on or off. A charged capacitor is "turned on" and represents a "1" bit.
在内存里，微小的电子部件即电容，容纳了代替数据的单元。你可以把电容想象成可被开关的小灯。一个充电的电容（想象中的小灯）意思是“打开”并代表了单元”
A discharged capacitor is "turned off" and represents a "0" bit. Each bank of capacitors holds eight bits—one byte—of data. A RAM address on each bank helps the computer locate data, as needed, for processing.
一个未充电的电容意味着“关闭”并代表了字节“0”。每个电容容纳8个单元，也就是一个字节的数据。每个内存在电容上的地址帮助计算机定位所需的数据来计算
The contents of RAM can be changed just by changing the charge of the capacitors.
内存的内容只能通过电容充电的方式改变。
Unlike disk storage, most RAM is volatile, which means that it requires electrical power to hold data.
与硬盘不同，大部分的内存是不稳定的，也就是说它需要电能来容纳数据。
If the computer is turned off, or if the power goes out, all data stored in RAM instantly and permanently disappears.
加入电脑被关闭，或者电源断了，所有在内存中存储的数据马上就会永远消失。 The capacity of RAM is usually expressed in megabytes (MB).
内存的存储量通常被表示为兆字节（也就是MB）
Today's personal computers typically feature between 64 and 512 MB of RAM. The amount of RAM needed by your computer depends on the software that you use.
而今个人电脑通常都是64到512兆的内存。你电脑所需内存的数量取决于你使用的程序。
RAM requirements are routinely specified on the outside of a software package. If it turns out that you need more RAM, you can purchase and install additional memory up to the limit set by the computer manufacturer.
内存的需求通常由意外的软件来确定。假如你的电脑需要更多的内存，你可以购买并安装辅助存储器，直到你计算机厂家设置的上限。
Today's personal computer operating systems are quite adept at allocating RAM space to multiple programs.
而今个人电脑操作系统在给多重程序分配内存空间方面非常熟练了。
If a program exceeds the allocated space, the operating system uses an area of the hard disk, called virtual memory, to store parts of a program or data file until they are needed.
如果一个程序超出了被分配的内存空间，操作系统会使用一部分被称为虚拟内存的硬盘空间来存储程序或者数据文件，直到满足他们的使用需求。。
By selectively exchanging the data in RAM with the data in virtual memory, your computer effectively gains almost unlimited memory capacity.
你的电脑通过有选择的交换内存和虚拟内存中的数据，可以有效的达到几乎无限的存储能力。
Too much dependence on virtual memory can have a negative affect on your computer's performance, however, because getting data from a mechanical device, such as a hard disk, is much slower than getting data from an electronic device, such as RAM.
然而对于虚拟内存过分的依赖会给你的电脑造成一个负面的影响，因为从一个机械硬件上，例如硬盘，获取数据，比从如内存的电子硬件上获取数据要慢的多。
RAM components vary in speed, technology, and configuration. RAM speed is often expressed in nanoseconds (ns). One nanosecond is 1 billionth of a second. With nanoseconds, lower numbers are better because it means that the RAM circuitry can react faster to update the data that it holds.
内存在速度、技术、布局各方面都不同。内存的速度通常是用毫微秒来描述。一个毫微秒是一百万分之一秒。几个毫微秒内，数据量越少越好，因为这表示内存电路可以更快的更新它所容纳的数据。

你这道题还真长。。。。我已经尽力了。

羊是一个临时控股区,应用程序指令、数据和操作系统。在个人电脑芯片,通常是几个小电路板,或插入主机计算机系统内的单位。
公羊是“候车室”为计算机处理器。它拥有原始数据,这是等待处理,以及对数据处理程序指令。此外,羊的结果直到他们能储存处理更永久磁盘或磁带和操作系统的基本功能,控制指令的计算机系统。这些指令装入RAM每次你启动你的电脑,他们留在那里直到你关掉你的电脑。在内存中,微小的电子零件称为电容举行的位代表数据。你能想象电容器与微观灯可开启或关闭。带电的电容器是“打开”和“1”。一个排放电容器是“关掉”和“0”。各银行拥有8 bits-one电容器byte-of数据。一只公绵羊在各银行都有助于解决计算机,定位数据进行处理。
羊的内容可以改变仅仅通过改变电荷的电容器。与磁盘存储,大多数羊不稳定,这意味着它需要电力数据。如果电脑关机,或如果没电了,所有的数据都存储在RAM立即和永久消失了。内存容量是通常表示在兆。今天的个人电脑的典型特征,512mb的64之间的公羊。内存电脑所需要的软件,取决于你所使用的。RAM要求照例在外面的一个软件。如果你需要更多的内存,你可以购买和安装额外的存储器上设定的电脑制造商。今天的个人电脑操作系统是非常adep