![]() The most common are the FTDI FT232 (AKA "FTDI") and the CH340. Other Arduino boards use chips that are specifically designed for this use. The ATmega16U2 is a microcontroller that has native USB capabilities so it can be programmed to act as a serial-USB bridge. The computer then creates a virtual COM port that makes it seem like your board is connected to a serial port on your computer even though it's connected via USB. For this reason a separate chip is usually added to Arduino boards that acts as a bridge between the serial communication of the ATmega2560 and the USB of your computer. The ATmega2560 is a very nice microcontroller but it doesn't have any USB capabilities. Nowadays we use USB to connect devices to our computers. Serial.prinln()) but most computers these days don't have a true serial port. The ATmega2560 uses serial communication for getting uploaded sketches and communication with the Arduino IDE Serial Monitor (e.g.
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