7 Segment Display Proteus Schematic In this article, we will tell you how to operate a 7-segment display (7SD in short) with a microcontroller. There are two (perhaps more) options to do this. The first is to connect the 7SD directly to the output ports of the microcontroller as shown in the picture above. This may cause a port shortage in large projects. As a second way to avoid this; We can run it by connecting a decoder to the 7SD. We will show both for you.