Digital Responder timing design circuit

Published:2012/12/10 0:29:00 Author:Ecco | Keyword: Digital Responder , timing | From:SeekIC

According to the difficulty degree of the grab answer, the host will set the time to answer the question, and the counter is set by preset by preset time circuit, and the counter clock pulse is provided by the second pulse circuit. The preset time circuit is designed by decimal synchronization addition and subtraction counter 74LS192 circuit, and the specific circuit is shown as the figure.



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