▁screen . ▁ ▁It ▁we ighed ▁ 1 4   l bs . ▁ ▁N EC ▁Ult ra L ite ▁ ▁The ▁N EC ▁Ult ra L ite , ▁released ▁in ▁mid - 1 9 8 9 , ▁was ▁perhaps ▁the ▁first ▁" not ebook " ▁computer , ▁we igh ing ▁just ▁ 2   kg ▁( 4 . 4   l bs ), ▁which ▁was ▁achieved ▁by ▁ob vi ating ▁flo ppy ▁or ▁hard ▁drive , ▁it ▁was ▁power ed ▁by ▁the ▁N EC ▁V 3 0 ▁ 1 6 - bit ▁CPU . ▁ ▁The ▁very ▁restrict ive ▁ 2   m eg aby te ▁RAM ▁drive ▁cr amp ed ▁the ▁product ' s ▁utility . ▁Although ▁port able ▁computers ▁with ▁cl am shell ▁L CD ▁screens ▁already ▁existed ▁at ▁the ▁time ▁of ▁its ▁release , ▁the ▁Ul tr al ite ▁was ▁the ▁first ▁computer ▁in ▁a ▁not ebook ▁form - factor . ▁It ▁was ▁significantly ▁smaller ▁than ▁all ▁earlier ▁port able ▁computers ▁and ▁could ▁be ▁carried ▁like ▁a ▁not ebook ▁and ▁its ▁cl am shell ▁L CD ▁fol ded ▁over ▁the ▁body ▁like ▁a ▁book ▁cover . ▁ ▁Apple ▁ ▁Mac int osh ▁Port able ▁Apple ' s ▁first ▁laptop ▁product ▁was ▁the ▁ 1 6 - bit ▁lead - ac id ▁battery ▁power ed ▁ 7 . 2 ▁kg ▁Mac int osh ▁Port able ▁released ▁in ▁September ▁ 1 9 8 9 . ▁ ▁The ▁Port able ▁pione ered ▁inclusion ▁of ▁a ▁pointing ▁device ▁( a ▁track ball )