The time manager * * * has five buttons. For the convenience of explanation, the buttons are numbered separately, including clock ①, punctuality ②, time setting ③, minute setting ④ and gear ⑤. This system * * * is divided into 16 files from 00 to 15, and the period from 00 to 03 is set to punctuality and power failure; 04~07 is the on-time power-on setting; 08~ 15 is the prompt setting on time. Meaning of flashing when ② is pressed _00-03_ Turn off on time _04-07_ Turn on on time _08- 15_ Prompt on time _