K3:--- P1.6

K4:--- P1.7

BEEP:--- P3.7



K3 --- 控制按键

K4 --- 清零按键



开机显示：

SECOND-CLOCK 0

TIME 00:00:00:00



K3 --- 控制按键：



第一次按下时,开始计时。



显示

BEGIN COUNT 1

TIME 00:00:01:88



第二次按下时,暂停计时。



显示

PAUST COUNT 2

TIME 00:00:01:88



第三次按下时,累计计时。-K3:- P1.6K4:- P1.7BEEP:- P3.7K3- control keys K4- Clear button boot shows: SECOND-CLOCK 0 TIME 00:00:00:00 K3- control buttons: the first press, the beginning of time. Showing BEGIN COUNT 1 TIME 00:00:01:88 second press, the suspension of time. Showing PAUST COUNT 2 TIME 00:00:01:88 third press, the accumulated time.