What is Virtual Terminal ? Virtual Terminal is a tool in Proteus, which is used to view data coming from Serial Port (DB9) and also used to send the data to Serial Port. So, let's get started with Virtual Terminal in Proteus. Virtual Terminal is an important tool available in Proteus and it comes quite in handy while working on serial modules i.e. I will first explain what is virtual terminal and then we will have a look at its uses and performance in Proteus ISIS. In today's tutorial, we will have a look at How to use Virtual Terminal in Proteus ISIS. Hello everyone, I hope you all are doing great.