This is the most common meaning of "downloading code." You are transferring a "sketch" from the official Arduino IDE to the Uno's microcontroller. Step-by-Step Upload Guide:
While the Arduino IDE is designed to send code to the board, retrieving it is more complex because the original C++ source code is converted into machine-readable during the upload process. 1. How to Upload (Download) New Code to Arduino Uno download code from arduino uno
: Use a USB-B cable (the standard "printer" cable) to connect your Uno to your computer. This is the most common meaning of "downloading code
Before trying to extract data from the chip, check your computer's . The Arduino IDE often keeps a copy of the compiled sketch in a temporary directory while it's open: Is there any way to download a sketch from an Arduino? How to Upload (Download) New Code to Arduino