Hello friends! In this tutorial, we will learn how to use Virtual Terminal in Proteus ISIS to inspect serial data and send simple commands to a simulated circuit. It is particularly useful when working with microcontrollers, GSM modules, GPS receivers, and other devices whose behavior can be understood through a serial interface. We will begin with the simplest arrangement: a simulated microcontroller communicating directly with Virtual Terminal. Then we will return to the original article's COMPIM example, which connects a simulation to a real computer serial port. Keeping those two arrangements separate will help you choose the correct components and avoid unnecessary COM-port problems. The aim is to make serial communication visible before building a larger application around it. We wil ...