毕业论文：基于单片机的智能时钟毕业论文设计（终稿）.doc

武汉科技大学中南分校 本科毕业设计(论文) 题　　目：基于单片机的智能时钟设 计 学　　院： 信息工程学院 专　　业： 自动化 学　　号： 20074224204 学生姓名： 周恒昆 指导教师： 韩建中 二○一○ 年 十一 月 二十四日 摘 要 本系统ATMEL公司的AT89C51单片机开发平台实现一种高精度，智能化的时钟系统。AT89C51是一种带4K字节闪存可编程可擦除（FPEROM—Flash Programmable and Erasable Read Only Memory）的低电压、高性能CMOS 8位微处理器，采单片机为控制核心由单片机控制的，,修改时间采用操作键盘,报时系统使用,通过调节输入方波的占功比，整系统设计比较完善，有显、报时、功能，除些之外还介绍了51单片机一些经验和方法，以便将51单片机的经过局部的修改就可以移植到单片机上，节约重新开发的时间最后总结了一些关于在做基于单片机的所遇到的问题困难，以及单片机与工业标准的MCS-51的各方面性能进行了比较，最大的特点只读存储器可以反复擦除，精简版本高效微控制器AT89C单片机为很多嵌入式控制系统提供了一种灵活性高且价廉的方案也是它应用较为广泛的原因。 Intelligent design based on single chip clockMeter Zhouhengkun Abstract The system design is based on ATMEL Corporation AT89C51 microcontroller development platform to achieve a high precision, intelligent clock system. AT89C51 is a flash with 4K bytes of erasable programmable read only memory (FPEROM-Flash Programmable and Erasable Read Only Memory), low voltage, high-performance CMOS 8-bit microprocessor, microcontroller AT89C51 adopted as the control center, by the MCU control the digital display of, modify, easy to operate, set the time using the keyboard, the whole point timekeeping system using passive buzzer, by adjusting the input square wave of the total power ratio, to achieve chime melodies sound features, the entire system more perfect, showing time and date, the whole point of time, adjust the setting time and date functions, in addition to those introduced in addition to 51 single-chip and assembly procedures and methods of some experience, so that after 51 MCU assembler can be transferred to local changes to the microcontroller, to achieve different functions, saving development time again. Concludes with a summary about doing intelligent microcontroller-based clock problems and difficulties encountered, and the AT89C51 microcontroller with industry-standard MCS-51 performance in all aspects were compared, the biggest feature is read-only memory can be repeated rubb