AT89S52单片机，基于c语言，独立按键的应用，包括CPU控制的按键扫描实验，按键加1数码管显示，按键可调节的电子时钟，定时中断控制的按键程序，独立式键盘的按键一键多功能程序，独立式键盘控制的4级变速流水灯，无消抖处理的按键程序，消抖处理的按键程序。-AT89S52 microcontroller, based on the C language, application independent key, including the key scanning experiment of CPU control, the keys and 1 digital tube display, keypad adjustable electronic clock, timer interrupt key program control, key functional program independent keyboard, 4 speed water light independent keyboard control, no elimination of key procedures deal with the key procedures, elimination Buffeting processing.