▁Com pass , ▁the ▁G av il an ▁and ▁the ▁Sh arp ▁were ▁hous ed ▁in ▁cl am shell ▁cases , ▁but ▁they ▁were ▁partly ▁IBM - compatible , ▁although ▁primarily ▁running ▁their ▁own ▁system ▁software . ▁Both ▁had ▁L CD s , ▁and ▁could ▁connect ▁to ▁optional ▁external ▁printer s . ▁ ▁Ky ot ron ic ▁ 8 5 ▁( T andy ▁Model ▁ 1 0 0 ) ▁ ▁The ▁year ▁ 1 9 8 3 ▁also ▁saw ▁the ▁launch ▁of ▁what ▁was ▁probably ▁the ▁biggest - s elling ▁early ▁laptop , ▁the ▁ 8 - bit ▁Ky oc era ▁Ky ot ron ic ▁ 8 5 . ▁O wing ▁much ▁to ▁the ▁design ▁of ▁the ▁previous ▁E pson ▁H X - 2 0 , ▁and ▁although ▁at ▁first ▁a ▁slow ▁s eller ▁in ▁Japan , ▁it ▁was ▁quickly ▁lic ensed ▁by ▁T andy ▁Corporation , ▁Oliv etti , ▁and ▁N EC , ▁who ▁recogn ised ▁its ▁potential ▁and ▁market ed ▁it ▁respectively ▁as ▁the ▁TR S - 8 0 ▁Model ▁ 1 0 0 ▁line ▁( or ▁T andy ▁ 1 0 0 ), ▁Oliv etti ▁M - 1 0 , ▁and ▁N EC ▁PC - 8 2 0 1 . ▁The ▁machines ▁ran ▁on ▁standard ▁AA ▁batter ies . ▁The ▁T andy ' s ▁built - in ▁programs , ▁including ▁a ▁B AS IC ▁interpreter , ▁a ▁text ▁editor , ▁and ▁a ▁terminal ▁program , ▁were ▁supplied ▁by ▁Microsoft , ▁and ▁was ▁written ▁in ▁part ▁by ▁Bill ▁G ates ▁himself