【摘要】 介绍了一种LED图文显示屏控制系统的设计与实现。该系统由单片机控制,通过RS-485总线与上位机通信,可实现分布式图文显示,扩展了实时时钟和温度传感器电路,支持日历和温度的显示。文中给出了具体的硬件电路和软件设计。该系统成本较低,显示稳定可靠,应用广泛。更多还原

【Abstract】 This paper introduced a system of LED display screen based on single chip.Communication with PC by the RS-485 bus,the distributed LED display was realized.This system has real time clock (RTC) circuit and temperature senor circuit,so it can also display calendar and temperature.The hardware design and software method were presented.The experiments indicate that this system is stable and reliable with low cost.更多还原