心形流水灯的毕业论文

Since the introduction of computer-chip technology in society, in every field in a wide range of light control systems, the microcontroller is replaced by the gear regulating the delay time of old growth rate in future in the heart of this to the MCU has several benefits: small size, light weight, a single power supply; features, low power consumption and low; and the data transfer, one finds in SCM internal, run fast, uding, high reliability, so single-chip is widely used in measurement and control system, data acquisition, instrumental, Mechatronics product, smart interface, computer communications, as well as single-chip multilevel system, article is primarily deals with a subject name is single-chip-chip, flowing water and light control, which enables we learned how to use the SCM control our lives in the application of the design of this subject at a later time, introduced me to many aspects of the topic describes in detail by the MCS-89C51 manifold programming the control circuit, it completed the single-chip flowing water and light control features, and gives specific hardware circuits and the appropriate kind of control circuit reliability, flexibility, use the wide-ranging especially suitable for medium-sized cities of traffic lights, neon lights, , it on other similar system has certain significance.

一共有三组等，三个定时回路，接通电源的时候，会有一个三极管先导通，这时候这组LED亮起了，导通后集电极的点位会被拉低，这时候电容通过限流电阻开始充电，当电压逐渐升高的时候，下一级三极管导通，这时候另一组LED亮起了，以此类推，这三组灯会轮流按这个顺序点亮，点亮时间是根据电阻和电容的值，电容越大，闪烁越慢，电阻越大闪烁越慢，相反则越快。

流水灯是如何运行的，三极管有几种状态，发光管工作电流是多少，PCB用的单面板还是双面板，什么叫PCB，常见PCB基板有几种，元件标注通常在哪一层，让设计的焊盘牢固可以让焊盘程什么状，走线为什么避免直角，设计大面地线覆铜为什么用网状，常用助焊剂是什么，焊锡中通常添加什么金属，为什么，助焊剂有什么作用，如何避免走线之间被焊锡搭桥，PCB上通常有一层绿漆有什么用。

心形流水灯的意义可以拿来当做礼物。根据查询相关公开信息显示，心形流水灯，通俗易懂，就是简单地用LED灯在万能板或PCB板上摆成一个心形，然后在单片机控制下完成不同流水闪烁的特效，LED流水灯是运用单片机原理和一些芯片功能，使用C语言或者是汇编语言编写控制代码，实现灯的亮灭方式，流水灯用于装饰婚庆布置、俱乐部、舞台等等各个场所。