This program was produced by PHM Chip type : ATmega16 Program type : Application AVR Core Clock frequency: 16.000000 MHz Memory model : Small External RAM size : 0 Data Stack size : 256-This program was produced by PHM Chip ty

cortex-m3的时钟程序，内置两个按键，使用内部定时作为秒信号，走时很准确-cortex-m3 clock program, built two buttons, use internal timer as a second signal, very accurate travel time