基于单片机的考勤管理系统毕业设计 程序附录.doc

摘 要 “考勤管理系统”是以RFID射频卡为信息识别载体的适用于企业单位或学校的考勤管理系统。本系统可使用人单位摆脱繁琐、低效的签到模式。识别工作不受环境的影响，操作方便快捷，具有防污、防水、加密存储等优点。结合网络通信技术和单片机技术，实现了企业和单位的自动考勤和对考勤数据的分析处理，节约了考勤时间，提高了考勤效率并提高了考勤的准确率，促进了企业单位的考勤管理信息化水平的发展。 硬件部分我们采用瑞士微电生产的EM4095构成的射频读卡电路。该芯片具有成本低工作稳定精确的采样点成本低工作稳定精确的采样点Abstract Attendance Management System is based on RFID radio frequency identification card information carrier for business or school attendance management system. The system can use one unit to get rid of cumbersome, inefficient attendance patterns. Identification work from the environment, easy to operate, with a stain resistant, waterproof, encrypted storage and so on. Combined with network communication technology and single-chip technology, the enterprises and units of automatic attendance and attendance data analysis and processing, saving time and attendance time, improve efficiency and increase attendance attendance accuracy, promote the enterprise information management units attendance level of development. We use the hardware part of the Swiss micro-electric production constituted EM4095 RF reader circuitry. The chip has a low cost, stable, accurate sampling points, and so on. Microcontroller with 51 series. Way with the microcontroller through the CAN bus communicate with each other. Reader circuit output signals using microcontroller microcontroller identifies the card number between 232 and PC communication, real-time upload data transfer to a PC for processing. The main achievement of functional testing PC card data. We use the hardware part of the Swiss micro-electric production constituted EM4095 RF reader circuitry. The chip has a low cost, stable, accurate sampling points, and so on. SCM Series 51 AT89C52. Software part is divided into reader identification, CAN communication, AT89C52 microcontroller and PC communication, alarm, PC side detection processing. This design uses a microcontroller development environment: AVR development environment for CodeVisionAVR C Compiler, AT89C52 development e