▁Sarah ▁D ale , ▁the ▁mother ▁of ▁Van essa . ▁She ▁played ▁the ▁role ▁from ▁ 1 9 6 8 - 1 9 7 8 , ▁when ▁she ▁retired ▁and ▁the ▁role ▁was ▁rec ast ▁with ▁Val erie ▁C oss art , ▁who ▁played ▁her ▁through ▁the ▁series ▁end ▁in ▁ 1 9 8 0 . ▁ ▁Seven ▁years ▁after ▁Love ▁of ▁Life ▁ended , ▁actress ▁Aud rey ▁Peters , ▁who ▁played ▁the ▁third ▁and ▁final ▁Van essa ▁D ale , ▁joined ▁the ▁cast ▁of ▁Gu iding ▁Light ▁playing ▁the ▁mother ▁of ▁break out ▁character ▁Re va ▁Sh ay ne , ▁who ▁was ▁apt ly ▁named , ▁Sarah ▁Sh ay ne . ▁ ▁D ale , ▁Sarah <0x0A> </s> ▁The ▁' history ▁of ▁la pt ops ▁describes ▁the ▁efforts , ▁begun ▁in ▁the ▁ 1 9 7 0 s , ▁to ▁build ▁small , ▁port able ▁personal ▁computers ▁that ▁combine ▁the ▁components , ▁inputs , ▁outputs ▁and ▁capabilities ▁of ▁a ▁desktop ▁computer ▁in ▁a ▁small ▁ch ass is . ▁ ▁Port able ▁prec urs ors ▁ ▁Portal ▁R 2 E ▁CC MC ▁ ▁The ▁port able ▁micro ▁computer ▁the ▁" Port al " ▁of ▁the ▁French ▁company ▁R 2 E ▁Mic ral ▁CC MC ▁officially ▁appeared ▁in ▁September ▁ 1 9 8 0 ▁at ▁the ▁Sic ob ▁show ▁in ▁Paris . ▁The ▁Portal ▁was ▁a ▁port able ▁micro comput er ▁designed ▁and ▁market ed ▁by ▁the ▁studies ▁and ▁develop ments ▁department ▁of ▁the ▁French ▁firm ▁R 2 E ▁Mic ral ▁in ▁ 1