电子钟源程序 定时器T0、T1溢出周期为50MS，T0为秒计数用，T1为调整时闪烁用，P3.5为调整按钮，P0口 为字符输出口，P2口为位选端，采用共阳显示管。时间调整方法：按3。5未超过1s进入省电模式，数码管不亮，内部时钟计时按3。5超过1s进入调整模式,要调整的时间会闪动，此时，按下P3。5超过0。5S，进入下位调整按下P3。5未超过0。5S，当前位加一-electronic timer bell source T0, T1 overflow cycle of 50-MS, T0 used to count seconds, when adjusted for T1 scintillation used for the adjustment of P3.5 button, P0 mouth of the character output mouth, P2 mouth-to-election, yang adopt demonstrate. Adjustment Method : 3. Not more than five 1s into power-saving mode, digital controls are not bright, internal clock time by three. more than five 1s adjustment model to adjust the timing of flashing, and this time, press P3. five more than 0. 5S and proceed to the next place? P3 adjustment. not more than 0 5. 5S, the current increase a bit