The existing control system of LED display transmits data with unidirectional open circuit way, but if any one of transmission paths was on the event of failure, LED display would not show correctly.
现有LED显示屏控制系统以单向开路的方式进行数据传输，在任意一个传输通路上发生故障时，LED显示屏都不能正确显示。
Compared with the traditional LED display system with SCM control, this system has many advantages, such as, the simple external circuit, being easy to upgrade and good stability.
与传统的单片机控制LED显示系统相比，本系统具有外围电路简单、升级容易、稳定性好的优点。
The control system consists of AT89S52 single chip computer system, autonomous tracing circuit, balance detection circuit, driving circuit of stepping motor and LED display circuit.
该系统包括单片机系统电路、寻迹检测电路、平衡检测电路、步进电机驱动电路、数码显示电路等。
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