It was developed in - house and comprised a linear circuit simulator with integrated schematic capture and graphical layout with back - annotation , a first for RF EDA software .
HP 's own entry , MDS , had been introduced in 1985 .
HP was developed in - house and comprised a linear circuit simulator with integrated schematic capture and graphical layout with back - annotation , a first for RF EDA software .
HP 's own entry , MDS , had been introduced in 1985 .