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Step 2Testing
It is better to test the circuit on bread board before to do the final soldering. When everything works as it should be, it is time to start solder.
HOW IT WORKS:
4060 is 14-bit (/16,384) ripple counter with internal oscillator and it gives with the 32768 Hz crystal 2Hz signal at the last output Q14, which is pin number 3. Then the 2Hz signal goes to 4024, which is also 7-bit (/128) ripple counter.
With the 2Hz clock input, the output Q1(/2) pin number 12 is low one second and high one second. Q2(/4) pin number 11 is low two seconds and then high two seconds. Q3(/8) is low four seconds and then high four seconds. When the last four (most significant digits 111100 = 60) goes to 1, the 4082 dual 4-input AND gate turn its output to 1.
Signal goes to reset pin and the counter starts calculating again from zero to 60 and the same signal also goes to the second 4024 ripple counter clock input. This signal comes to clock input every 60s and it works same way than the first ripple counter, but it calculates minutes.
HOW IT WORKS:
4060 is 14-bit (/16,384) ripple counter with internal oscillator and it gives with the 32768 Hz crystal 2Hz signal at the last output Q14, which is pin number 3. Then the 2Hz signal goes to 4024, which is also 7-bit (/128) ripple counter.
With the 2Hz clock input, the output Q1(/2) pin number 12 is low one second and high one second. Q2(/4) pin number 11 is low two seconds and then high two seconds. Q3(/8) is low four seconds and then high four seconds. When the last four (most significant digits 111100 = 60) goes to 1, the 4082 dual 4-input AND gate turn its output to 1.
Signal goes to reset pin and the counter starts calculating again from zero to 60 and the same signal also goes to the second 4024 ripple counter clock input. This signal comes to clock input every 60s and it works same way than the first ripple counter, but it calculates minutes.
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But I'm still getting the image sizes and tutorial text right, and it's only half done! :(
But not for long! :)