Combinational Logic Design - Date of Birth

In this activity, you are going to design a circuit that will display your (hopefully unique) date of birth on a single, seven-segment display. This design will bring together all of the design techniques that you have learned throughout this lesson.

I was born on November 09, 2000, so for the seven-segment display this is read as 11-09-2000. To create a truth table that matches the inputs of X, Y, and Z to the outputs of the numbers and dashes, you need to know what segments on the seven-segment display compose the digits. For example, 1 has segments b and c on while - has only the g segment on. Create a truth table that correlates XYZ inputs to all of the segments available for a seven-segment display. Now look at the vertical columns of each segment, and if any are exactly the same, then you only have to create one K-Map and circuit for them. For each unique segment column, create a K-Map of XY on the left side and Z on the top side. Group up any pairings/quadruplets and make an overall simplified truth statement combining all the pairs. From then, start implementing the truth statements into actual circuits that use AND, OR, inverter, NAND, and NOR gates to correctly output the segments. Make sure to use at least one NAND implementation and one NOR implementation that only use their respective gates. Once you have created each segment circuit, go through each one and check to make sure they correctly output the wanted display, in order to avoid future problems with Multisim. Once done, open Multisim and create three power sources connected to switches. Add all of the circuits you have made into the Multisim circuit and connect each segment output to the corresponding segment in the seven-segment display.