G06J   1/00		ϥ֥åɷ׻֡Σ	Hybrid computing arrangements	1845
G06J   1/02		ʬϵ	Differential analysers	179
G06J   3/00		ʥǥ׻ȴʥʥ׻Ϣưƥ	Systems for conjoint operation of complete digital and complete analogue computers	441
