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The digital display calendar clock circuit

2016-12-06 01:56  
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The digital display calendar clock circuit
The circuit can display month, date, hour, minute, second and week, and they can be automatically switched, and it can ring for 2 times, it also has functions of sleep timing function in 59min. The calendar clock is punctual, easily adjusted, clear at night and easily made.Working principleThe core of the circuit is a PMOS mass integrated circuit LM8364. 4-pin is the selective terminal of 12/24 h, and the high LEV is 24h system. When 6-pin is suspended, the 60Hz time based signals are input from 7-pin, and when receiving the high LEV, the 50Hz time based signal should be input from 7-pin.