Introduction: Date of Birth
A breadboard companion and a 9V battery
Wire(red, black, white, 3 other colors)
Three HD74LS00P Integrated Circuits
Two 7402 IC
One 7404 IC
Two 7408 IC
Two 7432 IC
7 resistors 220 Ohms or an R pack(4116R LF)
- One 7 segment display common cathode(FND500/6780)
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The first thing you will need to do is to make a truth table like the one above. Use your three switches: X,Y,Z or A,B,C. Write when and which segments you need to turn on to display you birthday when different switches are turned on and off.
Then, you will need to make a K-map for each segment of the seven-segment display. Write the outcomes you get from each segment in a grid-looking thing. You will get a word or equation from the group of ones or highs in the K-map. In the first picture in this step, the equation is below the K-map.
After that, draw a circuit for each segment according to your word or equation you got from the K-map.
Then you will need to make each circuit in a circuit design software(I used Multisim): using three switches, power and ground, however many ICs you need(AND, OR, Invertor, NAND, NOR), a seven-segment display common cathode, and a bus line if you want, I would recommend one.
Finally, if your circuit works in your design software, you can start to create your giant circuit on a breadboard. After you have finished your bread boarding, test it out using your truth table.
And that is how you display your birthday using a seven-segment display. Good job!! And Happy Bread Boarding!!!