AT89C52单片机为核心，通过驱动芯片MAX7219和片外E2PROM AT24C64等串行接口芯片扩展外围接口设计而成多功能体育比赛电子计分器-AT89C52 single-chip microcomputer as the core, through the driver chip and MAX7219 chip E2PROM AT24C64 serial interface chip, such as the expansion peripheral interface design