Abstract: A digital plotting system for displaying straight line information. This tem employs a long vector to describe a long straight line on a graph that starts from any point, extends in any direction and has a specific length. The direction is implemented by an eight 45.degree. quadrant system wherein the specific angle within a particular quadrant is derived from binary slope storage and rate generator devices and is referenced from either a vertical adjacent line or a horizontal adjacent line. The long vector logic is compatible for use with a digital plotting system for displaying all forms of graphic information including curved lines, straight lines and characters.

Abstract: A digital plotting system for displaying character information. The charar information includes symbols and alphanumeric information and an individual or group of characters may be presented in sequence from any point on a graph. The logic system describes each symbol within its own preselected retangular coordinate grid system from bottom to top and alternately from left to right and from right to left. At the end of each character definition the logic automatically returns the registers to the starting position for the next character. The character logic is compatible for use with a digital plotting system for displaying all forms of graphic information including curved lines, straight lines and characters.