文档介绍：题目: 基于51单片机的数字频率计
目录
第1节摘要…………………………………………………………………2
数字频率计概述………………………………………………………2
频率测量仪的设计思路与频率的计算………………………………2
基本设计原理…………………………………………………………3
第2节数字频率计(低频)的硬件结构设计………………………………4
………………………………………………………4
………………………………………………………4
………………………………………5
……………………………………………7
……………………………………………………7
………………………………………………………………8
第3节软件设计………………………………………………………………12
定时计数……………………………………………………………12
量程转换……………………………………………………………12
BCD转换………………………………………………………………12
LCD显示………………………………………………………………12
第4节结束语……………………………………………………………… 13
参考文献………………………………………………………………………14
附录 C语源程序代码…………………………………………………………15
基于51单片机的数字频率计
学生:
指导老师:
引言
本应用系统设计的目的是通过在“单片机原理及应用”课堂上学习的知识,以及查阅资料,培养一种自学的能力。并且引导一种创新的思维,把学到的知识应用到日常生活当中。在设计的过程中,不断的学习,思考和同学间的相互讨论,运用科学的分析问题的方法解决遇到的困难,掌握单片机系统一般的开发流程,学会对常见问题的处理方法,积累设计系统的经验,充分发挥教学与实践的结合。全能提高个人系统开发的综合能力,开拓了思维,为今后能在相应工作岗位上的工作打下了坚实的基础。
ABSTRACT
This text introduces the control system of a kind of elevator elevator is perpendicular directional of the conveyance equipments be indispensable in the high building of transportation depends electric power, dragging along to move a car that can carry person or thing and lead a track in the building of the well way up do perpendicularity to ascend and descend sport, there is prominent function in the people's the control elevator circulate of the PLC system also has more and more high request, request to attain the movement purpose of "steady, quasi-, quick" of elevator system mainly from PLC, logic control the electric circuit an exchanges difference to tread electric motor among them, after the electric appliances, get in touch with a machine, route of travel switch and press button, give out light the indicator constitute and
transducer for the control system of integral this machine control unit adoption carries on whole process a control to the machine by the pr