24小时制式，前面四位数码管分别显示小时值和分钟值；发光二极管用来表示秒钟十位值，第五位数码管显示秒钟的个位值；秒钟的读数方法是:发光二极管的点亮个数 ＋ 第五位数码管显示值 ；如发光二极管亮3个，第五位数码管显示6，表示当前秒钟值为36妙 ；调整时间使用K1～K4，K1、K2调整小时值，K3、K4调整分钟值 ；按键功能 K1：小时"+" K2：小时"-" K3：分钟"+" K4：分钟"-"-24-hour format, the previous four hours of digital control showed the value and minutes values　light-emitting diode is used to indicate the value of 10 seconds, the fifth LED display second bit value　second reading is: light-emitting diode The number of+ light the fifth digital tube display value　such as light-emitting diode 3, the fifth digital tube display 6, indicating the current value is 36 seconds, Miao　adjust the time using the K1 ~ K4, K1, K2 to adjust hours value, K3, K4 adjust the minutes value　key function of K1: hours " +"　K2: hours " -"　K3: minutes " +"　K4: minutes " -"