本课程设计的定时器，待机状态是一台时钟，以秒为单位两点闪烁，可设置多个闹铃时间，蜂鸣器鸣叫时间持续一分钟，并可作秒表使用，可控制秒表启停。-This course design of the timer, standby mode is a clock, in seconds unit two flashing, set a number of alarm time, screaming for a minute buzzer time, and can make a stopwatch to