0 0 , ▁T 1 0 0 0 , ▁and ▁T 1 2 0 0 ▁T os hib a ▁launched ▁the ▁ 8 / 1 6 - bit ▁T os hib a ▁T 1 1 0 0 ▁in ▁ 1 9 8 5 , ▁and ▁has ▁subsequently ▁described ▁it ▁as ▁" the ▁world ' s ▁first ▁mass - market ▁laptop ▁computer ". ▁It ▁did ▁not ▁have ▁a ▁hard ▁drive , ▁and ▁ran ▁entirely ▁from ▁flo ppy ▁dis ks . ▁The ▁CPU ▁was ▁a ▁ 4 . 7 7   M Hz ▁Intel ▁ 8 0 C 8 8 , ▁a ▁variation ▁of ▁the ▁popular ▁Intel ▁ 8 0 8 8 , ▁and ▁the ▁display ▁was ▁a ▁mon och rome , ▁text - only ▁ 6 4 0 x 2 0 0 ▁L CD . ▁It ▁was ▁followed ▁in ▁ 1 9 8 7 ▁by ▁the ▁T 1 0 0 0 ▁and ▁T 1 2 0 0 . ▁Although ▁limited ▁flo ppy - based ▁D OS ▁machines , ▁with ▁the ▁operating ▁system ▁stored ▁in ▁R OM , ▁the ▁T os hib a ▁models ▁were ▁small ▁and ▁light ▁enough ▁to ▁be ▁carried ▁in ▁a ▁back pack , ▁and ▁could ▁be ▁run ▁from ▁lead - ac id ▁batter ies . ▁They ▁also ▁introduced ▁the ▁now - standard ▁" res ume " ▁feature ▁to ▁D OS - based ▁machines : ▁the ▁computer ▁could ▁be ▁paused ▁between ▁sessions ▁without ▁having ▁to ▁be ▁restart ed ▁each ▁time . ▁ ▁IBM ▁PC ▁Convert ible ▁Also ▁among ▁the ▁first ▁commercial ▁IBM