彩灯循环控制器的设计...docVIP

PAGE PAGE 3 《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 班 级： 姓 名： 学 号： 指导教师: 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、间歇等，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。 2.设计任务要求 8路彩灯循环控制电路 该彩灯电路可以实现自动循环点亮 彩灯亮暗能实现右移、流水移动 3.设计框图 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 8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。