出租车计费系统毕业设计论文EDA.doc

目 录 摘 要 1 Abstract 2 第1章 引言 4 1.1 设计背景 4 1.2 EDA发展概况 5 第2章 出租车计费系统的设计 10 2.1出租车计费设计 10 2.2 基本设计思想 10 第3章 出租车计费系统的实现 11 3.1系统的总体框图 11 3.2程序流程图 12 第4章 系统各功能模块的实现 13 4.1模块JIFEI的实现 13 4.2 模块X的实现 15 4.3 模块XXX1的实现 18 4.4模块SE的实现 19 4.5 模块DI的实现 20 第5章 系统仿真 22 5.1 模块X的仿真结果 22 5.2 模块JIFEI的仿真结果 22 5.3 模块XXX1的仿真结果 23 5.4模块SE的结果验证 23 5.5模块DI的结果验证 23 结 束 语 24 致 谢 25 参考文献 26 摘 Abstract Along with the development of taxi trade, counting fees that the requirement of ware is also more and more higher to the taxi, user not only asks to count fees, and the ware function is stable, and it is accurate to count fees, and has guarding against the function cheated; At the same time still ask his to possess ticket material to print and IC blocks paying fees and computer string capable communication function.The method that hardware and software each other combine is adopted in this design, and takes one piece machine as the nucleus, printting to doing business information all did the detailed introduction from the circle pulsing,To the content of 89C51 and MAX813L Guarding the entrance the dog and the introduction that reduces the circuit to blame for focal point at the same time, this system still possesses to prevent to disturb and the function guarding against the dead machine, and special in the taxi design during power supply of system, possessing fairly strong steady pressure effect, the system adopted IC Block the memory, and can make things convenient for just the information of safe record customer and Che owner. Keywords：The dog is guarded the entrance 89c51 Circle pulse Anti-jamming 第1章 引言 1.1 设计背景 随着出租车行业的发展，对出租车计费器的要求也越来越高。二十世纪后半期，随着集成电路和计算机技术的飞速发展，数字系统也得到了飞速发展，其实现方法经历了由分立元件、SSI、MSI到LSI、VLSI以及UVLSI的过程。同时为了提高系统的可靠性与通用性，微处理器和专业集成电路（ASIC）逐渐取代了通用全硬件LSI电路，而ASIC以其体积小、重量轻、功耗低、速度快、成本低、必威体育官网网址性好而脱颖而出。目前，业界大量可编程逻辑器件（PLD），尤其是现场可编程逻辑器件（FPLD）被大量地应用在ASIC的制作当中。在可编程集成电路的开发过程中，以计算机为工作平台，融合了应用电子技术、计算机技术、智能化技术必威体育精装版成果主要能辅助进行三方面的设计工作：IC设计,电子电路设计以及PCB设计Altered公司开发的MAX+PLUSⅡ开发系统能充分满足可编程逻辑设计所有要求。 M