Statistical Mechanics of Biocomplexity

A coordinate generation system providing deflection signals for the X and the Y coordinates of an oscilloscope type display for producing a line on the display having a direction synchronized with a source of direction. Such a source of direction is typically a radar antenna in which case the line produced on the display is directed in the direction of the antenna such as in a plan position indicator (PPI). The coordinate generation system utilizes a sequence of pulses, each of which indicates a predetermined incremental change in the direction of the source of direction, for addressing a memory which stores corresponding incremental changes in the magnitude of the deflection signals to be applied to the X and to the Y coordinates of the display. The stored increments are accumulated and converted to analog signals suitable for driving the X and the Y coordinate axes of the display.