▁for ▁X ero x ' s ▁line ▁of ▁electronic ▁type writ ers . ▁In ▁ 1 9 7 5 ▁Norm ▁met ▁Robin ▁Kin ke ad , ▁manager ▁of ▁X ero x ' s ▁Indust rial ▁Design ▁and ▁Human ▁Fact ors ▁department , ▁whose ▁group ▁needed ▁a ▁graph ic ▁designer ▁to ▁develop ▁print w heel ▁and ▁display ▁fonts ▁for ▁the ▁type writ ers . ▁After ▁joining ▁Kin ke ad ' s ▁team , ▁he ▁was ▁introduced ▁to ▁the ▁X ero x ▁Al to , ▁a ▁prototype ▁computer ▁based ▁on ▁a ▁graph ical ▁user ▁interface ▁and ▁desktop ▁met ap hor . ▁He ▁helped ▁test ▁their ▁software ▁for ▁user - friend lin ess ▁and ▁ease ▁of ▁use , ▁and ▁often , ▁used ▁native ▁software ▁called ▁Mark up ▁to ▁create ▁digital ▁car ic atures . ▁So on ▁after , ▁X ero x ▁P AR C ▁needed ▁someone ▁to ▁help ▁design ▁pictures ▁on ▁their ▁screen ▁( icons ) ▁that ▁represented ▁objects ▁and ▁machine ▁functions . ▁Norm ▁sent ▁in ▁some ▁samples ▁of ▁his ▁digital ▁work , ▁which ▁included ▁“ in coming ▁mail ”, ▁and ▁was ▁invited ▁to ▁work ▁at ▁P AR C ▁as ▁the ▁visual ▁designer . ▁In ▁ 1 9 7 8 ▁Norm ▁arrived ▁at ▁X ero x ▁P AR C ▁in ▁Pal o ▁Al to , ▁California ▁to ▁join ▁the ▁X ero x ▁Star ▁development ▁team . ▁He ▁worked ▁alongside ▁Wal lace ▁Jud d , ▁Bill ▁Bow man , ▁and ▁Dave ▁Smith ▁over ▁the ▁next ▁few ▁years ▁to ▁design ▁and ▁user ▁test ▁the ▁X ero x ▁Star