彩灯循环控制器的设计..doc
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《数字逻辑系统》
设计报告
设计题目：彩灯循环控制器的设计
专 业： 电气工程及其自动化
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姓 名：
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设计日期：年月
目录
任务书????????????????????????????????????????????????·····················································1
设计任务目的??????????????????????????????????????????···············································1
设计任务要求?????????????????????????????????????????···············································1
设计框图??????????????????????????????????????????????···················································1
设计过程···················································3
设计目的···················································3
设计任务···················································3
设计方案···················································3
电路设计···················································4
NE555··················································4
74LS161················································5
74LS138················································6
电路总图···············································7
制作及调试过程·············································7
结论·······················································8
致谢······························································9
参考文献··························································10
附录：元器件清单··················································10
任务书
1.设计任务目的
设计一个彩灯流水控制电路，其主要部分实现定时功能，即在预定的时间到来时，如何产生一个控制信号控制彩灯的流向等，可通过利用中规模集成电路中可逆计数器和译码器来实现正、逆流水功能，利用组合电路实现自控、手控、流向控制等功能。
1.1电路原理图
设计过程
1．设计目的
掌握555多谐振荡器、译码器、十六进制加/减计数器的逻辑功能和工作原理，设计流水灯电路图，分析与设计时序控制电路。画出流水灯的整机逻辑电路图，掌握流水灯工作原理及其设计方法，并对各种元器件的功能和应用有所了解。并能对其在电路中的作用进行分析。另外，还要掌握电路原理和分析电路设计流程，每个电路的设计都要有完整的设计流程。这样才能在分析电路中有良好的思路，便于查找出错的原因。
2．设计任务要求
（1）用 个发光二极管作为彩灯显示，设计一个彩灯控制电路，能使彩灯的流向可以变化。具有彩灯亮点的右移、左移、全亮及全灭等功能。灯流动的方向可以手控也可以自控，自控往返变换时间为5秒。
（2）彩灯可以间歇流动，10秒间歇1次，间歇时间1秒。NE555
A、主要特点只需简单的电阻器、电容器，即可完成特定的振荡延时作用。其延时范围极广
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