1 ff . ▁ ▁Category : 1 8 9 5 ▁birth s ▁Category : 1 9 7 8 ▁death s ▁Category : G erman ▁invent ors ▁Category : G erman ▁business people <0x0A> </s> ▁Sever o ▁M . ▁Or n stein ▁( born ▁ 1 9 3 0 ) ▁is ▁a ▁retired ▁computer ▁scient ist ▁and ▁son ▁of ▁Russian - American ▁composer ▁Leo ▁Or n stein . ▁In ▁ 1 9 5 5 ▁he ▁joined ▁M IT ' s ▁Lincoln ▁Labor atory ▁as ▁a ▁programmer ▁and ▁designer ▁for ▁the ▁S AGE ▁air - def ense ▁system . ▁He ▁later ▁joined ▁the ▁T X - 2 ▁group ▁and ▁became ▁a ▁member ▁of ▁the ▁team ▁that ▁designed ▁the ▁LIN C . ▁He ▁moved ▁with ▁the ▁team ▁to ▁Washington ▁University ▁in ▁St . ▁Louis ▁where ▁he ▁was ▁one ▁of ▁the ▁principal ▁design ers ▁of ▁mac rom od ules . ▁ ▁Return ing ▁to ▁Boston ▁he ▁joined ▁Bol t , ▁Ber an ek ▁and ▁New man . ▁When ▁AR PA ▁issued ▁a ▁Request ▁for ▁Pro pos al ▁for ▁the ▁AR P AN ET , ▁he ▁joined ▁the ▁group ▁that ▁wrote ▁the ▁winning ▁proposal . ▁He ▁was ▁responsible ▁for ▁the ▁design ▁of ▁the ▁communication ▁interfaces ▁and ▁other ▁special ▁hardware ▁for ▁the ▁Interface ▁Message ▁Process or . ▁In ▁ 1 9 7 2 ▁he ▁head ed ▁the ▁first ▁deleg ation ▁of ▁U . S . ▁computer ▁scient ists ▁to ▁the ▁People ' s ▁Republic ▁of ▁China . ▁ ▁In ▁ 1 9 7 6 , ▁he ▁joined ▁X ero