Hello Guys,
I am Electronic project of Clock with 1 Hz frequency to make Clock on Led 7 segment Display.
will 555 is better in astable mode or 4060??
here is similar video of projects.
Neither will be good enough for a clock time reference. Use a 32,768 khz crystal and divide it down by 2^15 using a 4060 followed by 4013 or use a 4521.
Neither will be good enough for a clock time reference. Use a 32,768 khz crystal and divide it down by 2^15 using a 4060 followed by 4013 or use a 4521.
32.768 khz Watch crystals generally speaking tend to be much more accurate than crystals intended for logic/processors, and massively more accuarte than a 555 which would be very innacurate.
Gut a 1.5V battery operated wall/desk clock. They have an internal PCB (usually) that contains a crystal and an IC that outputs two 0.5 Hz pulses, 180 degrees out of phase. Summing these gives you very accurate 1Hz pulses. There is some variations of the ICs. Some have high with low going output pulses, others are low with high going pulses.