本科生毕业论文基于单片机的 GSM 短信多功能安防系统的讨论Research of multifunctional security system of GSM message based on SCM学生姓名【本人毕设，绝对可行】所在专业电子信息工程所在班级电子***申请学位****指导老师职称副指导老师职称答辩时间2025 年 5 月 7 日目 录摘 要...............................................................................................................................IAbstract..........................................................................................................................II1 绪论........................................................................................................................- 1 -2 功能实现与系统概述............................................................................................- 2 -2.1 功能实现......................................................................................................- 2 -2.2 系统概述......................................................................................................- 2 -2.2.1 STC89C52 单片机.............................................................................- 2 -2.2.2 GSM 模块...........................................................................................- 4 -2.2.3 传感器................................................................................................- 6 -2.2.4 LCD1602 液晶显示屏.......................................................................- 7 -2.2.5 DS1302 实时时钟芯片......................................................................- 7 -3 硬件实现................................................................................................................- 8 -3.1 原理框图......................................................................................................- 8 -3.2 系统电源......................................................................................................- 8 -3.3 PL2303 芯片.......................
