Abstract: A liquid crystal display (LCD) system and technique is disclosed which enables an improved visual presentation and display of the rate of change of an aircraft parameter in an avionics system. The rate of change of the parameter is computed and its magnitude is used to generate a frequency proportional to that magnitude. The generated frequency is coupled to control circuitry which energizes a plurality of display elements to sequentially and cyclically produce a visual display of those elements at a repetition rate proportional to the generated frequency. The display elements are separated into two groups, one of which indicates the rate of change during one condition of the parameter, and the other of which indicates the rate of change during another condition of the parameter. The display elements are located in groups above and below a digital display of the aircraft parameter. In this manner, the rate of change of a given parameter can be easily perceived even with peripheral vision.