说明：  no intro
(K3 :-- P1.6 K4 :-- P1.7 BEEP :--- P3.7 K3- K4 control button, reset button boot showed : SECOND-TIME CLOCK 0--- 00:00:00:00 K3 control buttons : the first press, the timer. Show BEGIN COUNT TIME 00:00:01:88 a second press, the suspension time. COUNT 2 shows PAUST TIME 00:00:01:88 third press, the total time. Show BEGIN COUNT 3 TIME 00:08:08:88 fourth press, the suspension time. COUNT 4 shows PAUST K4--- TIME 00:08:08:88 reset button : in any state, with one-K4 can be reset. Show SECOND-TIME CLOCK 00:00:00:00 0 0, 4 K3 press said the number of keys.)