经典的数码管扫描及按键电路，用最少的元件及最简单的接口控制8位数码管及8个按键-The classic digital scanning and button control circuit, with a minimum of components and the simplest interface to control the 8-bit digital tube and 8 buttons

ZLG tinyhmi简易人机界面在STC12c5a60s2上使用SPI通信实现-ZLG tinyhmi simple man-machine interface in STC12c5a60s2 achieved using SPI communication