时钟程序，要求画出时钟面板，时针，分针，秒针，可设定或解除闹钟时间，并提供闹钟服务相应的文字提示功能与声音提示功能。-Clock procedure that requires the panel to draw the clock, clock, minute, seconds can be set or release the alarm time, and provide alarm services to the corresponding text prompts and voice prompts.