Unlike standard PCB software that only checks electrical connectivity, Proteus boasts the "Virtual System Modelling" (VSM) technology. This allows you to simulate entire (like Arduino, STM32, 8051, and PIC) directly within the schematic. You can write code in an external compiler (like Keil or IAR), load the HEX file into the virtual chip, and watch the simulation react in real-time—displaying LED screens, running motors, and reading sensors without any physical hardware.
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Download the setup wizard and run the file. Unlike standard PCB software that only checks electrical