Date Of Birth
Description
In your digital electronics class of 20, there is a 6.8% probability that two of you share the same date of birth. This is assuming that you are all the same year level (sophomore/junior). If you are not, the probability would be even lower. Your date of birth makes you unique. We are going to use this uniqueness to design a circuit that will display your date of birth on a single seven-segment display. Admittedly, this design does not have any real practical application, but is a fun exercise that will bring together all of the design techniques that you have learned in this lesson. Your date of birth may make you unique in your class, but in 2006 there were 263,898,574,096 births world-wide. This means that on a daily basis, over 700,000,000 individuals share the same date of birth.
Conclusion Questions
To start this project off, I first drew a truth table. The table consisted of my birthday numbers, 07 - 27 - 98. With the truth table, I was then able to convert them into Boolean expressions including AOI, NAND, and NOR logic. I started to draw a schematic on paper but I stopped in realization that there was an easier way. I put my expressions and table into the Logic Converter in Multisim and received all of my needed connection and gates. With this, I connected them all together into a seven segment display. In order for me to breadboard this quicker, I rearranged the locic gates into IC chips. Once this was done, I finally was able to wire my board.
Towards the end of my project, I thought I had completed everything when I plugged it in and found out it didnt work. So instead of curling up in a ball on the floor, I decided to take a second look at my wiring. Being the "smart" person I am, I soon found out that my power and ground were not hooked up correctly. Fixing that caused my breadboard to finally work and I was quite satisfied.
Towards the end of my project, I thought I had completed everything when I plugged it in and found out it didnt work. So instead of curling up in a ball on the floor, I decided to take a second look at my wiring. Being the "smart" person I am, I soon found out that my power and ground were not hooked up correctly. Fixing that caused my breadboard to finally work and I was quite satisfied.