Digital 12 hrs clock from digital logic IC | without Microcontroller
In this video, I've explained how to make a 12 hours digital clock without microcontroller. Here, I've used crystal oscillator to generate the clock pulse. Crystal oscillator provides accurate clock frequency. Then with the frequency divider IC CD4060, we're getting accurate 1 Hz clock pulse.
This clock has four stages-
1. Clock pulse generation
2. MOD 60, this is for seconds hand display
3. MOD 60, this is for minutes hand display
4. MOD 12, this is for hours hand display
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Required Components:
IC:
1. CD4060 x 2
2. CD4026 x 6
3. 74ls00 x 1
Resistors: 10 K Ohm, 330 Ohm, 330 K Ohm
Capacitor: 30 pF
Zener Diode: 1N 4148
Miscellaneous:
Crystal oscillator 32.768 kHz
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