▁Municip ality ▁of ▁the ▁District ▁of ▁L un enburg ▁in ▁L un enburg ▁County ▁on ▁Highway ▁ 1 0 3 ▁about ▁seven ▁miles ▁south - s outh west ▁of ▁Bridge water , ▁between ▁Heb b ville ▁and ▁Italy ▁Cross . ▁ ▁References ▁Heb b ' s ▁Cross ▁on ▁Dest ination ▁Nova ▁Scot ia ▁ ▁Category : Comm un ities ▁in ▁L un enburg ▁County , ▁Nova ▁Scot ia ▁Category : General ▁Service ▁Are as ▁in ▁Nova ▁Scot ia <0x0A> </s> ▁Harold ▁Lock e ▁Haz en ▁( August ▁ 1 , ▁ 1 9 0 1   – ▁February ▁ 2 1 , ▁ 1 9 8 0 ) ▁was ▁an ▁American ▁elect rical ▁engineer . ▁He ▁contributed ▁to ▁the ▁theory ▁of ▁serv ome chan isms ▁and ▁feedback ▁control ▁systems . ▁In ▁ 1 9 2 4 ▁under ▁the ▁lead ▁of ▁Van ne var ▁Bush , ▁Haz en ▁and ▁his ▁fellow ▁under grad uate ▁Hugh ▁H . ▁Sp encer ▁built ▁a ▁prototype ▁AC ▁network ▁analy zer , ▁a ▁special - pur pose ▁analog ▁computer ▁for ▁solving ▁problems ▁in ▁inter connected ▁AC ▁power ▁systems . ▁ ▁Haz en ▁also ▁worked ▁with ▁Bush ▁over ▁twenty ▁years ▁on ▁such ▁projects ▁as ▁the ▁mechanical ▁differential ▁analy zer . ▁This ▁early ▁work , ▁and ▁the ▁binary ▁algebra ▁used , ▁would ▁be ▁found ational ▁to ▁the ▁emer gence ▁of ▁elect rome chan ical ▁and ▁digital ▁computers ▁in ▁later ▁dec ades . ▁ ▁Education ▁and ▁career ▁Haz en ▁was ▁born ▁at ▁Phil o , ▁Illinois ▁in ▁ 1 9 0 1