complex embodiments fig6 shows an embodiment of the present invention where the aging correction circuit 112 contains controller 120 one or more latches 124 and one or more digital to analog converters 126 this embodiment does not use a memory look up table but instead relies on a mathematical relationship to directly calculate an aging to voltage correction value via computations performed by controller 120 different mathematical relationships may be used for different light emitting materials within the organic electroluminescent display 102 the digital age to voltage correction values are stored in latches 124 and converted to analog voltages by digital to analog converters 126 this embodiment is useful where the mathematical relationship between the age of the light emitting materials and light output is relatively simple and therefore does not require a very powerful controller for computation likewise this embodiment is useful when the aging process of the materials is slow enough so that complex calculations may be performed over a relatively long period of time this embodiment has the advantage of eliminating the memories associated with lookup tables and therefore requires fewer materials reduces cost improves yields and reduces manufacturing steps since manufacturing processes associated with memories are often different from those associated with digital logic fig7 shows the conventional placement of the various elements of the electroluminescent display system 100 conventionally oled age circuit 118 the aging correction circuit 112 the video interface circuit 24 and the summing amplifiers 116 would be components mounted on a circuit board 30 the aging corrected analog video signals 104 are then supplied to the organic electroluminescent display panel 102 via a cable 20 the cable 20 connects.