Editing Interrupt (section)

==History==
Hardware interrupts were introduced as an optimization, eliminating unproductive waiting time in [[Polling (computer science)|polling loops]], waiting for external events. The first system to use this approach was the [[DYSEAC]], completed in 1954, although earlier systems provided error trap functions.<ref>{{cite journal|first=Edgar F.|last=Codd|author-link=Edgar F. Codd|title=Multiprogramming|journal=Advances in Computers|volume=3|pages=82}}</ref>

The [[UNIVAC 1103A]] computer is generally credited with the earliest use of interrupts in 1953.<ref>{{cite book |last1=Bell |first1=C. Gordon |last2=Newell |first2=Allen |title=Computer structures: readings and examples |date=1971 |publisher=McGraw-Hill |isbn=9780070043572 |page=46 |url=https://books.google.com/books?id=e39TAAAAMAAJ | access-date=Feb 18, 2019}}</ref><ref name=Smotherman/> Earlier, on the [[UNIVAC I]] (1951) "Arithmetic overflow either triggered the execution of a two-instruction fix-up routine at address 0, or, at the programmer's option, caused the computer to stop."<!--<ref name=Smotherman/>--> The [[IBM 650]] (1954) incorporated the first occurrence of interrupt masking.<!--<ref name=Smotherman/>--> The [[National Bureau of Standards]] [[DYSEAC]] (1954) was the first to use interrupts for I/O.<!--<ref name=Smotherman/>--> The [[IBM 704]] was the first to use interrupts for [[debugging]], with a "transfer trap", which could invoke a special routine when a branch instruction was encountered.<!--<ref name=Smotherman/>--> The MIT [[Lincoln Laboratory]] [[TX-2]] system (1957) was the first to provide multiple levels of priority interrupts.<ref name=Smotherman>{{cite web |last1=Smotherman |first1=Mark |title=Interrupts |url=https://people.cs.clemson.edu/~mark/interrupts.html |access-date=22 December 2021}}</ref>