自动化专业英语.doc

湖南人文科技学院 自动化专业英语翻译 翻译内容（所翻译书名及页码）： Designing Embedded Systems With PIC Micro controllers 系 别： 专 业： 班 级： 学生姓名: 学 号: 图5-2 Matrix Multimedia的Virtual PIC micro仿真器 Summary ·It is important to devise good structures for programs as they are developed. Flow and state diagrams can help with this. ·A number of techniques assist in producing clear and well-structured programs. These include subroutines, look-up tables, macros, and the use of Include Files. · The full 16 Series instruction set can be applied to build large and sophisticated programs. ·More complex programs require greater expertise in the use of simulation Techniques. 小结 ·在开发程序时，规划好程序的结构是非常重要的。可以使用流程图或状态图完成. ·在编程中使用大量的技术能使程序结构更加清晰，可读性强.这些方法包括子例程，查找表，宏指令和包含文件的使用. ·可以使用完整的16F84A指令集创建大型的复杂程序. ·程序越复杂，在仿真时就越需要专业的仿真技术. CHAPTER 6 Working with time: interrupts, counters and timers 第六章 与计数器相关的设备： 中断,计数器和定时器 Apart from the lucky few, our daily lives are ruled by time. We have alarm clocks to wake us in the morning, stopwatches to measure time duration, timers to start off single events (such as a VCR recording) and timers to maintain periodic events (such as a house heating system coming on at the same time every day). For the young and those who teach, the working day is ruled by a school timetable – a complex series of timed events. 我们日常生活的各各方面都与时间相关,几乎无处不受时间的约束和支配.闹钟叫我们起床,跑表计算所用的时间,定时器用于触发单一事件(例如VCR录像)以及维持周期性的事件(例如房间加热系统在每天同一时间工作).对于学生和老师来说,根据学校的时间表上课,这个时间表就是一系列受时间约束的事件. For embedded systems, time is similarly of the essence. At a simple level the system needs to Respond in a timely manner to external events.It may also need to measure time between external events and generate time-based activity. These requirements are met primarily by two differing, but related, features of a micro controller: the interrupt and the counter/timer. While each is a stand-alone element in its own right, both are so useful that they have