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key_4x4
- 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
key_4x4
- 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
KEY_4X4
- 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
- key 4x4 with stm32f103c8t6