▁RAM ▁Disk ▁( D : ). ▁A ▁separate ▁expansion ▁box ▁provided ▁dual ▁ 5 . 2 5 - inch ▁flo ppy ▁or ▁ 1 0   MB ▁hard ▁disk ▁storage . ▁ ▁The ▁product ▁was ▁market ed ▁intern ation ally ▁from ▁ 1 9 8 4 ▁to ▁ 1 9 8 6 . ▁D ul mont ▁was ▁eventually ▁taken ▁over ▁by ▁Time ▁Office ▁Comput ers , ▁who ▁rel abel led ▁the ▁brand ▁" K ook ab ur ra " ▁and ▁market ed ▁ 1 6 - ▁and ▁ 2 5 - line ▁L CD ▁display ▁versions . ▁ ▁Sh arp ▁and ▁G av il an ▁Two ▁other ▁not ew orth y ▁early ▁la pt ops ▁were ▁the ▁Sh arp ▁PC - 5 0 0 0 ▁( similar ▁in ▁many ▁respect s ▁to ▁the ▁D ul mont ▁Mag num ) ▁and ▁the ▁G av il an ▁SC , ▁announced ▁in ▁ 1 9 8 3 ▁but ▁first ▁sold ▁in ▁ 1 9 8 4 , ▁G av il an ▁fil ing ▁bank rupt cy ▁the ▁same ▁year . ▁ ▁Both ▁ran ▁the ▁ 8 / 1 6 - bit ▁Intel ▁ 8 0 8 8 ▁CPU . ▁ ▁The ▁G av il an ▁was ▁not ably ▁the ▁first ▁computer ▁to ▁be ▁market ed ▁as ▁a ▁" la ptop ". ▁It ▁was ▁equ ipped ▁with ▁an ▁internal ▁flo ppy ▁disk ▁drive ▁and ▁a ▁pione ering ▁touch pad - like ▁pointing ▁device , ▁installed ▁on ▁a ▁panel ▁above ▁the ▁keyboard . ▁Like ▁the ▁GR i D