Design of Countdown System Based oil SCM arid Showed by High-power Digital Tube
Using decoder CD4511 as latch and Darlington tube MC1413 as drive at high-power digital tube, it is designed to countdown by Single Chip Micyoco (SCM) STC89C52. The network, suppiying digital tube by switching buck regulator LM2576-ADJ and SCM CD4511 by t