《计算机英语》第二单元.pptx

主要内容 正文 生词 CPU (Central Processing Unit) Controls the operation of the computer and performs its data processing functions. The computer chip is primarily responsible for executing instructions. Monitor The screen for viewing computer information is called a monitor. Motherboard The main printed circuit board in a computer carries the system buses. It is equipped with sockets to which all processors, memory modules, plug-in cards, daughter-boards, or peripheral devices are connected. CPU （中央处理器） 控制着计算机的操作以及执行数据处理功能，主要负责执行指令的计算机芯片。 监视器 用于查看计算机信息的屏幕叫做“监视器”。 主板 计算机中主要的印刷电路板，它带有系统总线。板上装备有插槽，这样所有处理器、内存模块、即插即用卡、子板等均可插在主板上。这些插槽也可以用来连接外围设备。 正文 RAM Random Access Memory. A data storage device for which the order of access to different locations does not affect the speed of access, except for bursts. Data is typically stored in RAM temporarily for use by the process or while the computer is operating. FPM, EDO, SDRAM, DDR, etc are all types of RAM. RAM 随机存取存储器。一种数据存储设备。对它而言，除非有爆发性访问，否则访问顺序对访问速度没有影响。一般说来，程序临时需要的数据或者计算机正在操作使用的数据存储在RAM中。FPM，EDO，SDRAM，DDR等均属RAM。 正文 ROM Read-only memory is similar to RAM. It only cannot be altered and does not lose its contents when power is removed. Mouse In computer parlance a mouse can be both the physical object moved around to control a printer on the screen, and pointer itself. ROM 只读存储器类似于RAM，不过其中的数据不能改变，关机后也不丢失。 鼠标 用计算机业界的行业术语来说，鼠标器既指来回移动的以控制屏幕上光标指示器的物理设备，也指屏幕上的光标指示器本身。 正文 Keyboard A keyboard on a computer is almost identical to a keyboard on a typewriter. Computer keyboards will typically have extra keys; however, some of these keys (common examples include control, Alt) are meant to be used in conjunction with other keys just like shift on s regular type writer. Other keys (common examples include Insert, Delete, Home, End, Help, functions keys, etc.) are meant to be used independently and often perform editing tasks. Smaller keyboards with only math-related keys are typically called “keypads”. 键盘 计算机的键盘与打字机的键盘差不多。然而，计算机键盘有一些特有的扩展键。这些键中