Editing COWSEL (section)

{{Short description|Programming language}}
{{One source|date=March 2024}}
{{Use dmy dates|date=March 2024}}
{{Use British English|date=March 2024}}
{{Infobox programming language
| name = COWSEL, POP-1
| logo = <!-- Filename only -->
| logo caption = 
| screenshot = <!-- Filename only -->
| screenshot caption = 
| sampleCode = 
| paradigm = [[Programming paradigm|Multi-paradigm]]: [[Structured programming|structured]], [[Reflective programming|reflective]], [[Procedural programming|procedural]]
| family = [[Lisp (programming language)|Lisp]]: POP
| designers = [[Robin Popplestone]], [[Rod Burstall]]
| developers = [[University of Leeds]], [[University of Bradford|Bradford Institute of Technology]], [[University of Edinburgh]]
| released = {{Start date and age|1964}}
| latest release version = 
| latest release date = <!-- {{Start date and age|196?}} -->
| typing = [[Dynamic typing|dynamic]]
| memory management = 
| scope = 
| programming language = [[Assembly language|assembly]]
| platform = [[Ferranti Pegasus]], Stantec Zebra, [[Elliot 4120]]
| operating system = 
| license = [[Proprietary software|Proprietary]]
| file ext = 
| file format = <!-- or: | file formats = -->
| website = <!-- {{URL|}} -->
| implementations = 
| dialects = 
| influenced by = [[CPL (programming language)|CPL]], [[Lisp (programming language)|Lisp]]
| influenced = [[POP-2]]
}}
'''COWSEL''' ('''COntrolled Working SpacE Language''') is a [[programming language]] designed between 1964 and 1966 by [[Robin Popplestone]]. It was based on an [[reverse Polish notation]] (RPN) form of the language [[Lisp (programming language)|Lisp]], combined with some ideas from [[CPL (programming language)|Combined Programming Language]] (CPL).

COWSEL was initially implemented on a [[Ferranti Pegasus]] computer at the [[University of Leeds]] and on a Stantec Zebra at the [[University of Bradford|Bradford Institute of Technology]]. Later, [[Rod Burstall]] implemented it on an [[Elliot 4120]] at the [[University of Edinburgh]].

COWSEL was renamed '''POP-1''' in 1966, during summer, and development continued under that name from then on.