A device for forming a dynamic image on an aircraft sign , the device including: a plurality of light sources (250-258); an input power line; a first timer and a second timer both connected to an enable input; a plurality of delay circuits each connected to a different one of the light sources; a counter having a plurality of counter outputs, the counter receiving a counting pulse from the first timer in a dynamic mode of operation and disable signal from the second timer after expiration of a preset time, the expiration of the preset time causing the device to transfer from the dynamic mode to a static mode where at least one of the plurality of light sources is continuously illuminated; and a plurality of selector elements each coupled to the input power line and a different one of the plurality of counter outputs, each of the plurality of the selector elements having an output connected to an input of a different one of the plurality of delay circuits, each selector element causing power to be passed to the delay circuit to which it is attached for a time period determined by the counter output connected to it, and wherein in the dynamic mode, the counter causes a first light source to receive power by providing a high level output to a first one of the plurality of selector element connected to it and then, after the high level output is provided to the first one the plurality of selector elements, providing a high level output to a second one of the plurality of selector elements such that a second light source of the plurality of light sources receives power and providing a low level output to the first one the plurality of selector elements. a plurality of light sources (250-258); an input power line; a first timer and a second timer both connected to an enable input; a plurality of delay circuits each connected to a different one of the light sources; a counter having a plurality of counter outputs, the counter receiving a counting pulse from the first timer in a dynamic mode of operation and disable signal from the second timer after expiration of a preset time, the expiration of the preset time causing the device to transfer from the dynamic mode to a static mode where at least one of the plurality of light sources is continuously illuminated; and a plurality of selector elements each coupled to the input power line and a different one of the plurality of counter outputs, each of the plurality of the selector elements having an output connected to an input of a different one of the plurality of delay circuits, each selector element causing power to be passed to the delay circuit to which it is attached for a time period determined by the counter output connected to it, and wherein in the dynamic mode, the counter causes a first light source to receive power by providing a high level output to a first one of the plurality of selector element connected to it and then, after the high level output is provided to the first one the plurality of selector elements, providing a high level output to a second one of the plurality of selector elements such that a second light source of the plurality of light sources receives power and providing a low level output to the first one the plurality of selector elements. <EOS>