51单片机多功能信号发生器设计+PCB图+实物图
关键词： 单片机；信号发生器；运算放大器
Multi-function signal generator based on MCU
Abstract: since the new century, along with electronic technology, storage technology, in particular the rapid development of micro processing technology and production technology, single chip microcomputer, especially on SOC system in modern electrical equipment is widely used in such fields as industrial, life, everyday appliances such as television, cell phones, all have its figure, can say a little chip makes life become more and more intelligent, convenient. In this paper, starting with the most widely used C51, I first introduce the basic functions and features, and then through the signal generator manufacture which produce common square wave, triangle wave, sine wave, to layers of understanding of the basic application of C51. While signal generator made by operational amplifier and other discrete component and C51 programming respectively, from which we can not only learn basic usage of op-amp of components and by understanding C51 microcontroller programming, interrupt, D/A, serial port communication module conversion, etc.
Key words: single chip microcomputer; Signal generator; Operational amplifier
目录
1 绪论 - 1 -
1.1 单片机发展概述 - 1 -
1.2 单片机系统的组成 - 2 -
1.3 了解信号发生器 - 2 -
1.4 论文的主要研究内容 - 3 -
2 系统方案的设计 - 4 -
2.1 多种方案的分析 - 4 -
2.2 多种方案的比较 - 4 -
2.3 系统结构框图 - 5 -
2.3.1 由分立元件实现的结构框图 - 5 -
2.3.2 由C51单片机实现的结构框图 - 6 -
3 分立元件方案硬件设计 - 8 -
3.1 走近运放的世界 - 8 -
3.2 供电电源的设计 - 8 -
3.2.1 运放单电源供电的研究 - 9 -
3.2.2 运放单电源实现实现VOUT=mVS+b - 11 -
3.2.3 直流稳压电源的设计 - 12 -
3.3 矩形波发生电路 - 13 -
3.3.1 基本的矩形波发生电路 - 13 -
3.3.2 改进的矩形波发生电路 - 14 -
3.4 三角波发生电路 - 16 -
3.5 正弦波发生电路 - 18 -
3.5.1 滤波法 - 18 -
3.5.2 折线法 - 19 -
3.5.3 非线性方法 - 20 -
3.5.4 文氏桥振荡法 - 20 -
4 单片机方案硬件设计 - 23 -
4.1 单片机电源电路 - 23 -
4.2 单片机最小系统 - 23 -
4.2.1 单片机时钟电路 - 26 -
4.2.2 单片机复位电路 - 27 -
4.3 键盘电路 - 27 -
4.4 串口通讯电路 - 28 -
4.5 D/A转换电路 - 29 -
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