1 9 4 5 ▁p .   5 0 ) ▁also ▁refers ▁to ▁debugging , ▁this ▁time ▁of ▁aircraft ▁cam eras . ▁Ho pper ' s ▁bug ▁was ▁found ▁on ▁September ▁ 9 , ▁ 1 9 4 7 . ▁Computer ▁program mers ▁did ▁not ▁adopt ▁the ▁term ▁until ▁the ▁early ▁ 1 9 5 0 s . ▁The ▁sem inal ▁article ▁by ▁Gill ▁in ▁ 1 9 5 1 ▁is ▁the ▁earliest ▁in - depth ▁discussion ▁of ▁programming ▁errors , ▁but ▁it ▁does ▁not ▁use ▁the ▁term ▁" bug " ▁or ▁" debug ging ". ▁In ▁the ▁AC M ' s ▁digital ▁library , ▁the ▁term ▁" debug ging " ▁is ▁first ▁used ▁in ▁three ▁papers ▁from ▁ 1 9 5 2 ▁AC M ▁National ▁Me et ings . ▁Two ▁of ▁the ▁three ▁use ▁the ▁term ▁in ▁quot ation ▁marks . ▁By ▁ 1 9 6 3 ▁" debug ging " ▁was ▁a ▁common - en ough ▁term ▁to ▁be ▁mentioned ▁in ▁passing ▁without ▁explanation ▁on ▁page ▁ 1 ▁of ▁the ▁CT SS ▁manual . ▁ ▁Peg gy ▁A . ▁Kid well ' s ▁article ▁St alk ing ▁the ▁El us ive ▁Computer ▁Bug ▁discuss es ▁the ▁et ym ology ▁of ▁" bug " ▁and ▁" debug " ▁in ▁greater ▁detail . ▁ ▁S cope ▁As ▁software ▁and ▁electronic ▁systems ▁have ▁become ▁generally ▁more ▁complex , ▁the ▁various ▁common ▁debugging ▁techniques ▁have ▁expanded ▁with ▁more ▁methods ▁to ▁detect ▁anom al ies , ▁assess ▁impact , ▁and ▁schedule ▁software ▁patch es ▁or ▁full