计算机专业英语句子翻译,参考

信息科学与工程学院，计算机专业英语英译汉作业，仅供参考

Translate this sentences into Chinese:

1. In reality, computer memory is only capable of remembering sequences of zeros and ones, but by utilizing the binary number system it is possible to store arbitrary rational numbers and through clever formatting all manner of representations of pictures, sounds, and animations.

事实上，计算机内存只能记忆0和1组成的序列，但通过二进制系统，它也可以存储任何的有理数。对于所有代表图片、声音和动画的数据，经过巧妙的格式处理后，内存也可以存储。

2. Computer keyboards will typically have extra keys; however, some of these keys are meant to be used in conjunction with other keys just like shift on regular typewriter. Other keys are meant to be used independently and often perform editing tasks.

然而，计算机键盘有一些特有的扩展键。这些键中的某些键与其他键联合使用，有点像常规打字机上的Shift键。另一些是独立使用的并经常用于执行一些编辑任务。

3. Mouse is a hand-held, button-activated input device that when rolled along a flat surface directs an indicator to move correspondingly about a computer screen, allowing the operator to move the indicator freely, as to select operations or manipulate text or graphics. 鼠标是一种手用的、用按扭控制的输入设备，当在平台上滑动时可以相应地移动计算机屏幕上的指示箭头，使得操作者可以随意控制指示箭头，由此来选择项目、控制内容或作图。

4. An expansion card that converts analog audio signals from a microphone, audio tape, or other source to digital form that can be stored as a computer audio file, and converts computer audio files to electrical signals that can be played through a speaker.

这个扩展卡，可以把麦克风、音频磁带或其它来源的模拟音频信号转换成计算机能存储的音频文件形式，也可以把计算机音频文件转换为通过扬声器播放的电信号。

5. Floppies do not hold too much data, but most computers are capable of reading them. Note though that there are different competing format used for floppies, so that a floppy written by one type of computer might not directly work on another, also sometimes called “diskette”.

软盘不能记录太多的数据，但大多数的计算机可以读取它。需要注意的是，由于竞争的原因，软盘有不同的编写格式，因此，被某种计算机编写的软盘可能不能直接地应用在另一种计算机上，表示软盘的单词除了”floppies”外，还有”diskette”。

6. A modem modulates outgoing digital signals from a computer or other digital device to analog signals over a conventional telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device.