摘要： 下面是 [与MM5314N建立的数字时钟电路]的电路图　　材料BOM表：R1= 100Kohms R2= 47Kohms R3= 100Kohms R4.....10= 2.2Kohms R11.....17= 10Kohms R18.....24-25-26= 220 ohms 0W5 R25-26=1.2Kohms 0W5 C1= 2200uF 25V C2= 100uF 25V C3= 18nF 100V polyester C4-5= 10nF ceramic OR polyester Q1....7= BC550 Q8....13= BC560 IC1= MM5314N ***[See Notice] D1= 1N4148 GR1= 4X1N4002 S1...3= 1X2 mini switch S4...6= Push Butto