Power up the Microbit and load the Hex file.

Press button A to select the required gate and its Boolean symbol will be displayed.

An input left unconnected or connected to 0V(GND), represents a logic 0.

An input connected to ~3V represents a logic 1.

The input and output states will be displayed in real time.

The logic truth table for the selected function can be displayed at any time by pressing Button B, this will remain visible for 2 seconds than revert back to the live display.

Pressing buttons A+B enables or disables live changes to the output at P2 and is indicated by the LED at 4,4 lit when disabled and unlit when enabled.

The display will reflect the logic status whether the output at P2 is enabled or not.

A different gate can be selected by pressing button A.

With a single Microbit you can evaluate the basic functions in isolation.

The example shows a NOT gate with a low input and corresponding high output

If you wish to experiment with more complex functions you will need to use multiple Microbits.