| 基于单片机的大功率数码管倒计时系统 |
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| 引用本文： | 王泽师.基于单片机的大功率数码管倒计时系统[J].科技信息,2011(11):I0108-I0109. |
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| 作者姓名： | 王泽师 |
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| 作者单位： | 海南师范大学物理与电子工程学院,海南海口571158 |
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| 摘 要： | 设计了以STC89C52单片机为控制核心,采用译码器CD4511作为锁存器,通过达林顿管MC1413驱动共阳极大功率数码管显示的倒计时电路。电路采用开关型降压稳压器LM2576-ADJ给数码管供电,用三端稳压器LM7805给单片机及CD4511供电,可对999天内的时间进行倒计时,精确到秒。实验结果验证了设计方法的正确性和可行性。
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| 关 键 词： | 单片机STC89C52 倒计时 大功率数码管 |
Design of Countdown System Based oil SCM arid Showed by High-power Digital Tube |
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| WANG Ze-shi.Design of Countdown System Based oil SCM arid Showed by High-power Digital Tube[J].Science,2011(11):I0108-I0109. |
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| Authors: | WANG Ze-shi |
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| Institution: | WANG Ze-stfi (School of Physical and Electical Engineerina;Hainan Normal University, Haikou Hainan,571158, China) |
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| Abstract: | 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 three-terminal regulator LM7805,is a countdown controlled by SCM and showed by itigh-power digital tube,which can countdown to 999 days,accurate to seconds.the result of the experiment demonstrates the correctness and feasibility of the design. |
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| Keywords: | SCM STC89C52 Countdown High-power digital tube |
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