基于PLC的电子计算器(内附中英文翻译).doc

毕业 任务书 一、题目 基于PLC的电子计算器 二、指导思想和目的要求 PLC即可编程逻辑控制器 （可编程控制器件Programmable Logic Controller）是一种专门为在工业环境下应用而设计的数字运算操作的电子装置。它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应该按易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。 [M]. 电子工业出版社 [2] 廖常初主编.PLC编程及应用.3版[M].北京：机械工业出版社,2008. [3] 程周主编.欧姆龙系列PLC设计实践. 1版[M].北京：中国石油工业出版社，2007. [4] 洪志育主编例说PLC[M].人民邮电出版社，2006张凤珊．电气控制及可编程序控制器．2版[M]．北京:?中国轻工业出版社，2003． []?史国生．电气控制与可编程控制器技术.?3版[M]．北京:?化学工业出版社，2010.?? []?吴中俊,黄永红.可编程序控制器原理及应用[M].北京:机械工业出版社,2005.?[8]?王永华.现代电气控制及PLC应用技术[M].北京:航空航天大学出版社,2003.?摘 要关键词： ABSTRACT In Peoples Daily life, shopping, bookkeeping, learning, etc., all related to the number, we can use the calculator, calculator is really important. Generally calculator made by arithmetic unit, controller, memory, keyboard, display, power supply and some optional peripherals and electronic parts by manual or machine equipment. In some ways, generalized the computer is including the electronic calculator. There are integrated circuit in the electronic calculator, but the function of the calculator is simple, cheap price, good for carrying and good stability. Based on PLC design of the electronic calculator than traditional calculators are more reliable, more convenient, better performance, easier to adapt to the rapid development of society, greatly convenient peoples life. With electronic calculator for development, and its use scope is more and more widely, the future will be more demand for electronic calculator, one of the most advanced controller and PLC as a contemporary, based on the design of the calculator has incomparable advantages than traditional electronic calculator, so this subject is based on programmable logic controller (PLC) in the future design of electronic calculators to get a bigger breakthrough. In order to consolidate the knowledge in the four years at college, in the design in order to realize the functions including two points, one is to realize the arithmeti