Editing RT-11 (section)

{{Short description|Real-time operating system}}
{{Infobox OS
| name = RT-11
| logo =
| screenshot = 
| caption = Directory listing using DIR utility under RT-11 running on a [[UKNC]] school computer
| developer = [[Digital Equipment Corporation]] and Mentec Inc.
| source_model = [[Closed source]]
| kernel_type = [[Monolithic kernel|Monolithic]]
| supported_platforms = [[PDP-11]] family and clones
| ui = Keyboard Monitor (KMON) [[Command-line interface]]
| released = {{Start date and age|1973}}{{Citation needed|date=March 2022}}
| latest_release_version = 5.7
| latest_release_date = {{Start date and age|1998|10}}<ref>{{cite web| url=http://www.oshistory.net/metadot/index.pl?id=2526;isa=Category;op=show| archive-url=https://web.archive.org/web/20070928022401/http://www.oshistory.net/metadot/index.pl?id=2526;isa=Category;op=show| title=RT-11 - Release history| website=www.oshistory.net |archive-date=28 September 2007| access-date=18 March 2022}}</ref>
| marketing_target = Laboratory, scientific, industrial equipment
| programmed_in = [[MACRO-11]]
| prog_language = [[APL (programming language)|APL]], [[ALGOL]], [[BASIC]], [[BASIC-PLUS]], [[C (programming language)|C]], [[DIGITAL Command Language|DCL]], [[FOCAL (programming language)|Focal]], [[Fortran]], [[MACRO-11]], [[Pascal (programming language)|Pascal]], [[TECO (text editor)|TECO]]
| language = English
| updatemodel = 
| package_manager = 
| working_state = Discontinued
| license = [[Proprietary software|Proprietary]]
| website =
}}
'''RT-11''' ('''Real-time 11''') is a discontinued small, low-end,<ref name=RT11.HC82Decem>{{cite magazine
 |last=Campbell |first=Milton |date=December 1982 |title=The RT-11 Perspective
 |magazine=[[Hardcopy (magazine)|Hardcopy]]}}</ref> single-user [[real-time operating system]] for the full line of [[Digital Equipment Corporation]] [[PDP-11]] [[16-bit computing|16-bit]] computers. RT-11 was first implemented in 1970. It was widely used for [[real-time computing]] systems, [[process control]], and [[data acquisition]] across all PDP-11s. It was also used for low-cost general-use computing.<ref name=RT11.HC82Decem/>