Introduction to digital electronics

Giuliano Donzellini, Domenico Ponta

Introduction to the Digital Circuit Simulator

001001

 

v1.71

In this introductory exercise you will test the simple logic network represented in the figure below and, at the same time, you will gain confidence with the Digital Circuit Simulator (d-DcS) of the Deeds. To open the file in the d-DcS, just click on the figure:

Next step is to check the behavior of the network. You will start the functional simulation (Interactive Animation) of the network by clicking, on the d-DcS toolbar, the command . Now the three input switches A, B and C can be toggled and the gate's output OUT will change accordingly. We suggest that you draw the truth table for a three variable boolean function and then fill the output column with the data resulting from the simulation.

Last task requested is the timing simulation of the same network. You start the timing simulation of the network by clicking, on the d-DcS toolbar, the command . The input values must be drawn directly on the timing diagram window. You should define the values versus time of the three inputs, such as all the possible combinations of A, B and C are tested.