VB编写的与单片机串口通讯程序,显示单片机的工作状态,并能声光报警.-VB, and COM port communication program to show the working status of single chip, and can sound and light alarm.

读取rfid标签来实现门禁系统控制并发送短信与声光报警。(Read the RFID tag to control the access control system and send SMS and acousto-optic alarm.)