基于DA转换模块的单片机仿真和C语言开发 能力拓展训练.docx

目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc377302009 摘要  PAGEREF _Toc377302009 \h I  HYPERLINK \l _Toc377302010 Abstract  PAGEREF _Toc377302010 \h II  HYPERLINK \l _Toc377302011 1设计任务  PAGEREF _Toc377302011 \h 1  HYPERLINK \l _Toc377302012 1.1设计要求  PAGEREF _Toc377302012 \h 1  HYPERLINK \l _Toc377302013 1.2理论分析  PAGEREF _Toc377302013 \h 1  HYPERLINK \l _Toc377302014 2硬件电路设计  PAGEREF _Toc377302014 \h 3  HYPERLINK \l _Toc377302015 2.1单片机波形产生模块  PAGEREF _Toc377302015 \h 3  HYPERLINK \l _Toc377302016 2.2 D/A转换模块  PAGEREF _Toc377302016 \h 3  HYPERLINK \l _Toc377302017 2.3显示模块  PAGEREF _Toc377302017 \h 4  HYPERLINK \l _Toc377302018 2.4总体电路设计  PAGEREF _Toc377302018 \h 5  HYPERLINK \l _Toc377302019 3程序设计  PAGEREF _Toc377302019 \h 6  HYPERLINK \l _Toc377302020 3.1程序框图  PAGEREF _Toc377302020 \h 6  HYPERLINK \l _Toc377302021 3.2源程序  PAGEREF _Toc377302021 \h 7  HYPERLINK \l _Toc377302022 4软件仿真  PAGEREF _Toc377302022 \h 13  HYPERLINK \l _Toc377302023 5心得体会  PAGEREF _Toc377302023 \h 14  HYPERLINK \l _Toc377302024 参考文献  PAGEREF _Toc377302024 \h 15   PAGE \* MERGEFORMAT II 摘要 波形发生器是一种能够产生不同波形、不同频率的设备。在本次课程设计中，要求设计一种采用D/A转换的波形发生器，拟采用单片机产生各个时间点不同波形的值，利用D/A转换芯片将单片机输出的数字量转换为模拟量输出，形成相应波形。 利用Keil软件进行C语言编程开发，使用Proteus画出电路图，并对实验结果进行软件仿真。通过独立键盘来控制两种波形的类型选择、频率变化，并且频率按1Hz的幅度等量变化，最终通过LCD液晶显示器输出显示其各自的类型以及频率。 关键字：波形发生器、单片机、A/D转换、LCD液晶显示器 Abstract Waveform generator is a kind of can produce different waveform and frequency of the equipment. In the curriculum design, asked to design A waveform generator adopts D/A conversion, proposed values of various points in different waveforms by single chip microcomputer, using D/A conversion chip microcontroller output of digital quantity can be converted into analog output, form the corresponding waveform. Using the Keil software development, C programming language to use Proteus draw circuit diagram, software simulation and the results o