The design of the number and figures manifestation electric circuit
Abstract
The content of this design is designing and making about of number and circuit of numerical display , a part of numerical experimental installation , the main of numerical display is bring about the function of display . in the numerical system , general ,it is need that is directly showing the measurand of number , one side , it offerings the handling result of people directly read , another side , it uses to keeping watch on the working situation of numerical system .Therefore , the circuit of numerical diaplay is important a part of many nymerical installation .
The part use “BCD seven-section numerical display tube”that is display , “the 74LS48”conduct as a part of drive , the circuit adopt commom cathode circuit . The design adopt “Protel”that draw the circuit board and the drawing of principle . the part of drive put under the circuit board ,it resolve the problem that the driver element is easy falling ,the exterior is even more succinct .
Is is main to solve the problem that is :
It is use Protel to design the printing circuit board ;
It is welding the electronic component ;
The display is without glimmer .
Key word : Adopt commom、The figures manifestation、Printing Circuit board.