It used RS-232 communication criteria. Through controlling circuit with 89c51 and 89c2051 as the core and back driving circuit, LED screen's various displaying mode and state is displayed.
该系统采用RS- 232通信标准，通过以89c51和89c 2051为核心的控制电路和后续驱动电路，得到了LED显示屏多种显示方式和状态。
It used RS-232 communication criteria. Through controlling circuit with 89c51 and 89c2051 as the core and back driving circuit, LED screen's various displaying mode and state is displayed.
该系统采用RS- 232通信标准，通过以89c51和89c 2051为核心的控制电路和后续驱动电路，得到了LED显示屏多种显示方式和状态。
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