4x4键盘结合LED动态显示，里面包含了键盘扫描、2进制转10进制BCD码、LED编码和LED动态显示-4x4 keyboard combination LED dynamic display, which contains the keyboard scan, 2 to 10 hexadecimal BCD hex code, LED codes and LED dynamic display

4*4键盘子程序,属于分级底层驱动，已经设置子程序对外接口。-4* 4 keyboard subroutine, are graded low-level driver has set the external interface of the subroutine

采用51单片机作为主控芯片，对外围4x4键盘做按键扫描处理。-Adopt 51-series microcomputer as the master of peripheral keyboard 4x4 chip buttons scanning treatment. Do

key 4x4 with stm32f103c8t6