本程序使用STC单片机，控制LED利率牌，使用计算机串口刷新数据，用于银行、证券交易所等场合，程序内部有详细的注释，主要读者稍加修改即可用于自己的电子产品中。-This procedure using STC microcontroller, control LED interest rate card, using a computer serial port to refresh data for banks, stock exchanges and other occasions, there are detailed procedures for the Notes, the main readers can easily modify for their own electronic products.