x ▁P AR C ▁where ▁he ▁implemented ▁a ▁computer ▁interface ▁to ▁an ▁early ▁las er ▁printer . ▁Later ▁he ▁co - led ▁( with ▁Ed ▁Mc Cre ight ) ▁the ▁team ▁that ▁built ▁the ▁Dor ado ▁computer . ▁Or n stein ▁co - des igned ▁Mock ing bird , ▁the ▁first ▁interactive ▁computer - based ▁music - score ▁editor , ▁and ▁o vers aw ▁its ▁programming . ▁ ▁In ▁ 1 9 8 0 ▁he ▁was ▁instrument al ▁in ▁starting ▁Computer ▁Prof ession als ▁for ▁Social ▁Res p ons ibility ▁( CP SR ). ▁He ▁wrote ▁an ▁aut obi ography ▁describing ▁his ▁experiences ▁in ▁computer ▁science , ▁published ▁in ▁ 2 0 0 2 . ▁ ▁References ▁ ▁Or al ▁history ▁interview ▁with ▁Sever o ▁Or n stein , ▁Charles ▁B abb age ▁Institute , ▁University ▁of ▁Minnesota . ▁ ▁Or n stein ▁describes ▁his ▁experience ▁at ▁Lincoln ▁Labor atory ▁which ▁included ▁work ▁on ▁the ▁S AGE , ▁T X - 2 ▁and ▁LIN C ▁computers . ▁He ▁discuss es ▁his ▁move ▁to ▁Washington ▁University , ▁and ▁the ▁later ▁work ▁there ▁on ▁D AR PA / IP TO ▁spons ored ▁mac rom od ule ▁project . ▁As ▁the ▁principal ▁hardware ▁designer ▁of ▁the ▁Interface ▁Message ▁Process or ▁( I MP ) ▁for ▁the ▁AR P AN ET , ▁Or n stein ▁describes ▁the ▁I MP ▁design ▁work ▁at ▁Bol t ▁Ber an ek ▁and ▁New man ▁( BB N ), ▁the ▁working ▁environment ▁of ▁the ▁group ▁at ▁BB N , ▁his ▁relationship ▁with