The binary-coded decimal counter composed of CD4017

Published:2011/8/13 0:57:00 Author:qqtang | Keyword: binary-coded decimal, counter | From:SeekIC

In the figure is a binary-coded decimal counter composed of 2 CD4017, one CD4066 and one CD4013, of which IC3 and IC4 are the counter, IC2 is used to connect the working power supply and counting pulse input circuit of IC3 and IC4, IC1 is used to control them. C1 and R2 compose the reset circuit of IC3 and the offset circuit of IC1. C2 and R3 compose the reset circuit of IC4. VD1 and VD2 are the divide diodes of the counter switch control circuit.



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