Software prototyping: Difference between revisions

Revision as of 01:42, 9 February 2022

Revision as of 01:51, 9 August 2023

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The practice of prototyping is one of the points [[Frederick P. Brooks]] makes in his 1975 book ''[[The Mythical Man-Month]]'' and his 10-year anniversary article "[[No Silver Bullet]]".

An early example of large-scale software prototyping was the implementation of NYU's Ada/ED translator for the [[Ada (programming language)|Ada programming language]].<ref>{{cite journal |title=The NYU Ada Translator and Interpreterbook |first1=Robert B. K. |last1=Dewar |first2=Gerald A. |last2=Fisher Jr. |first3=Edmond |last3=Schonberg |first4=Robert |last4=Froelich |first5=Stephen |last5=Bryant |first6=Clinton F. |last6=Goss |first7=Michael |last7=Burke |journaltitle=ACMProceeding of the ACM-SIGPLAN Noticessymposium –on ProceedingsAda ofprogramming thelanguage ACM- SIGPLAN Symposium'80 on|chapter=The theNYU Ada Programmingtranslator and Languageinterpreter |volume=15 |issue=11 |pages=194–201 |date=November 1980 |isbn=0-89791-030-3 |doi=10.1145/948632.948659|s2cid=10586359 }}</ref> It was implemented in [[SETL]] with the intent of producing an executable semantic model for the Ada language, emphasizing clarity of design and user interface over speed and efficiency. The NYU Ada/ED system was the first validated Ada implementation, certified on April 11, 1983.<ref>{{cite web |url=http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA136759 |title=Ada Compiler Validation Summary Report: NYU Ada/ED, Version 19.7 V-001 |author=SofTech Inc. |date=1983-04-11 |access-date=2010-12-16 |archive-date=2012-03-12 |archive-url=https://web.archive.org/web/20120312080046/http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA136759 |url-status=dead }}</ref>

==Outline==

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===PSDL===

PSDL is a prototype description language to describe real-time software.<ref>{{cite journal|last=Luqi|author2=Berzins, Yeh |title=A Prototyping Language for Real-Time Software|journal=IEEE Transactions on Software Engineering|date=October 1988|volume=14|issue=10|pages=1409–1423|doi=10.1109/32.6186|hdl=10945/39162 |s2cid=35348234 |url=https://calhoun.nps.edu/bitstream/10945/39162/1/inc_Luqi_a_prototyping_1988.pdf}}</ref>

The associated tool set is CAPS (Computer Aided Prototyping System).<ref>{{cite journal|last=Luqi|author2=Ketabchi |title=A Computer-Aided Prototyping System|journal=IEEE Software|date=March 1988|volume=5|issue=2|pages=66–72|doi=10.1109/52.2013|hdl=10945/43616 |s2cid=15541544 }}</ref>

Prototyping software systems with hard real-time requirements is challenging because timing constraints introduce implementation and hardware dependencies.