本程序用于测试实时时钟模块SD2000系列功能之一:四种中断功能 程序功能如下： 1.在SD2000试验板上显示实时时间的小时和分钟? 2./INT1 到指定时刻时输出低电平. 3./INT2输出固定频率32768HZ. 4.测试每分钟边沿中断输出(INT MODE3)和每分钟固定中断输出(INT MODE4)功能-procedures used to test the real-time clock module SD2000 series of functional one : four interrupts functions of the program are as follows : 1. The SD2000 board real-time test of time 2./INT1 hours and minutes to the designated low-level output at the moment. 3./INT2 32768HZ fixed frequency output. 4. testing every minute edge interrupt output (INT MODE3) per minute and fixed interrupt output (INT MODE4) function