Computer is a machine that accepts and processes data into information under the control of a stored program .
计算机是一种在存储程序的控制之下，接收数据，并把其处理成信息的机器。
Process control : the field of process control covers a wide rang of computer and automated systems , usually in manufacturing or production .
过程控制领域覆盖了范围很广的计算机和自动化系统，这些系统通常属于生产制造厂。
Workstation is a more powerful , single-user computer. A workstation likes a personal computer .
工作站是一种性能更强的计算机，两者很像。
A bus is a collection of wires through which data is transmitted from one part of a computer to another .
总线是将数据从计算机的一个部件传送到另一个部件的电线集合。
The term architecture can refer to either hardware or software ,or to a combination of hardware and software .
体系结构这个词既可指硬件又可指软件，或指硬件及软件的结合。
Each row of a table is uniquely identified by a primary key composed of one or more columns .this implies that a table may not contain duplicate rows.
表的每一行都是由一个唯一的主键标识的。主键由一列或多列构成。这意味表里不会有重复的行。
UNIX is considered a powerful operating system .
UNIX 操作系统被认为是以一种功能强大的操作系统。
Human languages are known as natural languages .
人类的语言一般称为自然语言。
The binary numbering system is the starting point for representing information。
二进制数值系统是信息表示的开始。
Computer architecture is the discipline of designing computer system 。
计算机体系结构是指设计计算机系统的准则。
The architecture of a system always defines its broad outlines ，and may define precise mechanism as well 。
一个计算机系统的体系结构总是能决定它的大致轮廓，并且还可能决定它的细致架构。
The basic input device on most small computer system is key board 。
大多数小的计算机系统中的基本输入设备是键 。
Another term for display screen is monitor 。
显示屏的另一个名称是监视器或显示器。
Larger landscape monitors can play two full page ，side by side 。
大型的显示器可以并排显示两个完整的页面。
Another important aspect of a monitor is its screen size 。
显示器或监视器的另一个重要的方面是它屏幕的大小。
The pictures that we see on the screen are made up of dots，also called pixels 。
我们在屏幕上看到的图像是由称为像素的点构成的。
Printer is a kind of device that prints text or illustrations on paper 。
打印机是一种能在纸上打印文本或图表的设备。
Optical scanner do not distinguish text from illustrations 。
光学扫描仪不能区分文本和图形。
External storage is sometimes called auxiliary stora
ge 。
外部存储器有的也被称为辅助存储器。
Auxiliary storage units are used to store instructions and date when they are not being used in main memory of the computer 。
指令和数据在计算机的内存中一时用不到的话，就要用辅助存储单元来对它们进行保存。
One disadvantage of external storage is that the time finding a particular piece of information on the external storage is longer than memory‘s
外部存储器有一个缺点，就是找到存储在其上某块信息的时间比主存长。
CD-ROM drives are slow compared to hard disks 。
CD-ROM 驱动器相比硬盘而言速度更慢。
1.sensor 传感器 2. Central Processing Unit
3.bus 总线 4.millisecond 毫秒
5.date transfer rate 数据传输率
Computer is a machine that accepts and processes data into information under the control of a stored program .
计算机是一种在存储程序的控制之下，接收数据，并把其处理成信息的机器。
Process control : the field of process control covers a wide rang of computer and automated systems , usually in manufacturing or production .
过程控制领域覆盖了范围很广的计算机和自动化系统，这些系统通常属于生产制造厂。
Workstation is a more powerful , single-user computer. A workstation likes a personal computer .
工作站是一种性能更强的计算机，两者很像。
A bus is a collection of wires through which data is transmitted from one part of a computer to another .
总线是将数据从计算机的一个部件传送到另一个部件的电线集合。
The term architecture can refer to either hardware or software ,or to a combination of hardware and software .
体系结构这个词既可指硬件又可指软件，或指硬件及软件的结合。
Each row of a table is uniquely identified by a primary key composed of one or more columns .this implies that a table may not contain duplicate rows.
表的每一行都是由一个唯一的主键标识的。主键由一列或多列构成。这意味表里不会有重复的行。
UNIX is considered a powerful operating system .
UNIX 操作系统被认为是以一种功能强大的操作系统。
Human languages are known as natural languages .
人类的语言一般称为自然语言。
The binary numbering system is the starting point for representing information。
二进制数值系统是信息表示的开始。
Computer architecture is the discipline of designing computer system 。
计算机体系结构是指设计计算机系统的准则。
The architecture of a system always defines its broad outlines ，and may define precise mechanism as well 。
一个计算机系统的体系结构总是能决定它的大致轮廓，并且还可能决定它的细致架构。
The basic input device on most small computer system is key board 。
大多数小的计算机系统中的基本输入设备是键 。
Another term for display screen is monitor 。
显示屏的另一个名称是监视器或显示器。
Larger landscape monitors can play two full page ，side by side 。
大型的显示器可以并排显示两个完整的页面。
Another important aspect of a monitor is its screen size 。
显示器或监视器的另一个重要的方面是它屏幕的大小。
The pictures that we see on the screen are made up of dots，also called pixels 。
我们在屏幕上看到的图像是由称为像素的点构成的。
Printer is a kind of device that prints text or illustrations on paper 。
打印机是一种能在纸上打印文本或图表的设备。
Optical scanner do not distinguish text from illustrations 。
光学扫描仪不能区分文本和图形。
External storage is sometimes called auxiliary stora
ge 。
外部存储器有的也被称为辅助存储器。
Auxiliary storage units are used to store instructions and date when they are not being used in main memory of the computer 。
指令和数据在计算机的内存中一时用不到的话，就要用辅助存储单元来对它们进行保存。
One disadvantage of external storage is that the time finding a particular piece of information on the external storage is longer than memory‘s
外部存储器有一个缺点，就是找到存储在其上某块信息的时间比主存长。
CD-ROM drives are slow compared to hard disks 。
CD-ROM 驱动器相比硬盘而言速度更慢。
1.sensor 传感器 2. Central Processing Unit
3.bus 总线 4.millisecond 毫秒
5.date transfer rate 数据传输率