STC系列单片机————运用74HC595锁存器 矩形键盘按键在数码管上显示相应数字-The STC MCU---- use 74HC595 latch rectangular keyboard keys digital display corresponding figures

P0与J12 用8PIN排线连接， P1与JP16 用排线连接，573锁存器控制和单片机脚直接位选控制(非译码器控制)数码管。-P0 and J12 cable to connect with 8PIN, P1 and JP16 with a ribbon cable, 573 feet latch control and chip select control bits directly (non-decoder control) digital tube.