555 program controller circuit

Published:2012/10/16 21:35:00 Author:Ecco | Keyword: 555, program controller | From:SeekIC

As shown in 24-10, it uses four 555 circuits which respectively form different timing monostable circuit, and they are concatenated cycle triggers. IC7 is timed and set by trigger monostable circuit composed of C4069's hex inverter. IC6 is four 2 -input AND gate; IC5 (CC4044) is four RS latch. When the start button is pressed, IC1 sets.



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