文档介绍：Computer English
Chapter anization puters
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Key points: useful terms anization puters Difficult points: describing anization puters
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计算机专业英语
Requirements:
1. Terms puter hardware
2. Organization puters and their functions
3. 掌握专业词汇的构成规律,特别是常用词缀及复合词的构成
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计算机专业英语
New Words & Expressions:
instruction cycle 指令周期 decode , 译解
bus n. 总线 pins , 管脚
uppermost ; address bus 地址总线
data bus 数据总线 via , 通过, 经由
multibit 多位 bidirectional 双向的
unidirectional 单向的 hierarchy ,层级
microprocessor register
timing ;时序;时间选择 synchronize ...同步
assert ,发出 deassert vt. 撤销
trigger , 引起, 触发 map
port
anization puters
Abbreviations:
CPU(Central Processing Unit) 中央处理器
I/O(Input/Output) 输入输出(设备)
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计算机专业英语
anization puters
-1 anization
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计算机专业英语
anization puters
puter systems, from the embedded controllers found in automobiles and consumer appliances to puters and mainframes, have the same anization. anization has three ponents: the CPU, the memory subsystem, and the I/O subsystem. The anization of ponents is shown in Figure 2-1.
大多数计算机系统,从汽车和日用电器中的嵌入式控制器到个人计算机和大型主机,都具有相同的基本组成。其基本组成包括三个主要部件:CPU、存储器子系统和I/O子系统。这些部件的一般组成如图2-1所示。
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计算机专业英语
Physically, a bus is a set of wires. ponents of puter are connected to the buses. To send information from ponent to another, the ponent outputs data onto the bus. The ponent then inputs this data from the bus. As plexity of puter system increases, it es more efficient (in terms of minimizing connections) at using buses rather than direct connections between every pair of devices. Buses use less space on a circuit board and require less power than a large number of direct connections. They also require fewer pins on the chip or chips prise the CPU.
System Buses
从物理上来说,总线就是一组导线。计算机的部件就是连在总线上的。为了将信息从一个部件传到另一个部件,源部件先将数据输出到总线上,然后目标部件再从总线上接受这些数据。随着计算机系统复杂性的不断增长,使用总线比每个设备对之间直接连接要有效得多(就减少连接数量而言)。与大量的直接连接相比,总线使用较少的电路板空间,耗能更少,并且在芯片或组成CPU的芯片组上需要较少的引脚。
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