Let’s see how it stacks up to the Uno, and find out what each of the components on the board do. At the end of the video, I go through the initial set up in the Arduino IDE and run a simple sketch.

Here, ours was COM3 (Arduino/Genuino Uno), but yours may have a different number or name, depending on the microcontroller you’re using.

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The Arduino Uno-compatible board has an MCS-51 (often called 8051 instead) instead of the usual ATmega328P/ATmega168. Specifically, [ElectroBoy] uses the AT89S52.

The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.