# Microcontroller pins

Key points:

- Microcontroller pins are separated into inputs on the left and outputs on the right.
- The pins are labelled anticlockwise so that by default the top-left input is input0.
- The analogue input pins are placed below the digital pins and are labelled anti-clockwise from a_input0.
- You can change the label for any pin (except the reset pin) by clicking on the pin label to edit it. If you try to use a label that has already been used, the pin will keep its original label. Please note that this does not affect the pin name (as it appears in the Pins section in the Parts library).
- The analogue range of these input pins is 0-255 by default.

## See also:

- Microcontroller pin properties
- Microcontroller
- Microcontroller serial communications
- Microcontroller part parameters