The medicament dispenser has a base unit and a replaceable refill container. The base unit has one or more sensors for sensing one or more conditions of the medicament dispenser and a display for displaying indicia representing a state of the medicament dispenser. First indicia show the base unit and/or the refill container and define a contained area suitable for representing a condition of the medicament dispenser. Second indicia are used to represent at least one sensed condition of the medicament dispenser and are displayed in the contained area defined by the first indicia.