BL / PY : Get your micro:bit to display a cow when button A is pressed, a giraffe when button B is pressed, a rabbit when both button A and B are pressed and a blank screen when no buttons are pressed. If you are coding this in micropython, you have to be very careful with the order in which you check your button presses ...
BL / PY : Change your script so that the micro:bit displays a blank screen when no buttons are pressed instead of a picture of a ghost.