The week digit displayer circuit

Published:2011/6/7 22:28:00 Author:qqtang | Keyword: digit displayer | From:SeekIC

The week digit display circuitThe circuit of the week digit display circuit is in the figure, of which IC1 is a decimal counter/distributor, IC2 is a special integrated circuit CH233 of TV channels, and it can drive LED digital displayers directly and make it display the numbers of 1-8. The clock control signals in the circuit is from the PM terminal of large crystal clock, it is outputting a converting pulse at o'clock every night. When the pulse signal is amplified by VT1, it is delivered to the CP terminal of IC1, by every input pulse, the high LEV of IC1 Qo-Q7 output terminal moves in turn.



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