Time shared programmable logic array

摘要: This specification describes arrays for performing logic functions. In these input variables are placed on a series of parallel lines that intersect number output in grid intersections. Field effect devices at intersections have their gate terminals connected to one the and source terminal through load device potential. The drain either unconnected, directly ground or two switching devices. with unconnected drains inoperative. operative all times. While switches only when switch is closed. array can be time shared by different functions having other off any given time.