> What does a Cortex have to do with the Arduino? Note that they don't say THE Arduino but AN Arduino. What you're thinking about is probably the Arduino Uno w

> What does a Cortex have to do with the Arduino? Note that they don't say THE Arduino but AN Arduino. What you're thinking about is probably the Arduino Uno which is the original model. These days Arduino is a platform made up by a common software (IDE, libraries etc) and a family of products that employ different microcontrollers (Different AtMegas but also Cortex processors), different form size (from the original "big" size to the small Arduino Nano) different amount of memories and different extras. For example Arduino MKR1000 is AN Arduino employing a 32bit SAMD21 Cortex-M0+