文档介绍：51单片机课程设计报告学院:物理与信息工程专业班级:B11073011(电信111)学号:姓名:指导教师:王莉目录1、设计任务与要求----------------------------------------------------------------------------------------2(1)概述-------------------------------------------------------------------------------------------------------2(2)AT89C52介绍-------------------------------------------------------------------------------------------2(3)引脚功能说明-------------------------------------------------------------------------------------------22、总原理图及元器件清单-------------------------------------------------------------------------------3(1)总原理图-------------------------------------------------------------------------------------------------3(2)元器件清单----------------------------------------------------------------------------------------------33、硬件模块分析-------------------------------------------------------------------------------------------4(1)74LS245引脚结构及功能------------------------------------------------------------------------------4(2)LED显示模块--------------------------------------------------------------------------------------------4(3)数码管显示模块------------------------------------------------------------------------------------------5(4)蜂鸣器模块------------------------------------------------------------------------------------------------64、系统硬件结构图及程序流程图-----------------------------------------------------------------------7(1)系统硬件结构图------------------------------------------------------------------------------------------7(2)程序流程图------------------------------------------------------------------------------------------------75、调试及结论-----------------------------------------------------------------------------------------------8(1)单元调试---------------------------------------------------------------------------------------------------8(2)整体调试---------------------------------------------------------------------------------------------------86、实验结果--------------------------------------------------------------------------------------------------8(1)数码管倒计时及流