Craig & Antonelli
Digital differential analyzer
 A digital differential analyzer comprises an arithmetic unit for performing an integration operation, a control unit for controlling the arithmetic unit, a plurality of temporary storage means in the arithmetic unit for temporarily storing interim results of the arithmetic operation therein to relieve the influence of propagation delay time of the arithmetic unit. 
Hitachi, Ltd. Hitachi Denshi Kabushiki Kaisha
G G
G06F G01N
inventional inventional
Yoshiharu Norio Takeyuki Shigeru Kunihiro
Itatsuda Yokozawa Endoh Yabuuchi Okada