ASIC（专用集成电路）[52RD.com] Application-Specific Integrated Circuit. A piece of
custom-designed hardware[52RD.com] in a chip.[52RD.com] 专用集成电路。一个在一个芯片上定制设计的硬件。[52RD.com] address bus （地址总线）[52RD.com] A set of electrical lines connected to the processor and all of
the peripher[52RD.com] als withwhich itcommunicates. The address bus is used by the
processor to se[52RD.com] lect aspecific memory location or register within a particular
peripheral. I[52RD.com] f the address bus contains n electrical lines, the processor can
uniquely ad[52RD.com] dress up to 2^n such locations.[52RD.com] 一个连接处理器与所有外设的，用来通讯的电子线路集。地址总线被处理器用来选择在[52RD.com] 特定外设中的存储器地址或寄存器。如果地址总线有n条电子线路，处理器能唯一寻址高[52RD.com] 达2^n的地址空间。[52RD.com] application software（应用软件）[52RD.com] Describes software modules specific to a particular embedded
project. Theapp[52RD.com] lication software is unlikely to be reusable across embedded
platforms, simp[52RD.com] lybecause each embedded system has a different application.[52RD.com] 用来描述一个特定的嵌入式项目中的某一软件模块。应用软件不象可重用的交*嵌入式[52RD.com] 平台，只是因为每一个嵌入式系统有不同的应用软件。[52RD.com] assembler（汇编编译器）[52RD.com] A software development tool that translates human-readable
assembly language[52RD.com] programs into machine-language instructions that the processor
can understan[52RD.com] dand execute.[52RD.com] 一个能把人可读的汇编语言程序转换到处理器可理解和运行的机器指令的软件开发工具[52RD.com] 。[52RD.com] assembly language（汇编语言）[52RD.com] A human-readable form of a processor"s instruction set. Most
processor-speci[52RD.com] fic functions must be written in assembly language.[52RD.com] 一种人可读的处理器指令集的形式。大多数处理器相关的功能必须用汇编语言编写。
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