Introduction - If you have any usage issues, please Google them yourself
System consists of AT89C51, LED digital tube, keys, light emitting diode parts, to achieve the adjustment time, time time setting, output function. Function of the system chosen by the SB0, SB1, SB2, SB3, SB4 completed. Which SB0 of time proofreading, timer adjustment function keys, enter the adjustment of status by SB 0. SB1 switch for the function keys. Turn into the first round of press SB1 way, È r, three-way regular time setting process prompted by regular adjustment of status SB3 into separate ways. Set