三个功能键，当上电后，系统显示提示符P。按下k1后，系统开始正常运行，此时按其它键均无效当再按下k1后，进入调秒状态，按k2加1,按k3减1,再按一下k1进入调分状态，再按一下，进入调时，再按一下，进入正常的运行状态在调整状态下，当调整该位时，该位会闪烁-Three function keys, when the power on, the system displays the prompt P. After pressing k1, the system starts running, then press another key are invalid when the press k1, tune into seconds, press k2 plus 1, according to k3 minus 1, and then click k1 tune into sub-state, and then look, when entering tone, and then click into the normal operating state in the adjustment of status, when adjusting the bit that flashes