||This article may be expanded with text translated from the corresponding article in the Russian Wikipedia. (April 2013)|
This article is about DRAKON, a programming language. For other uses of Drakon see Drakon (disambiguation).
DRAKON (Russian: ДРАКОН, "dragon" – backronym for Дружелюбный Русский Алгоритмический язык, Который Обеспечивает Наглядность, "friendly Russian algorithmic language that guarantees clarity") is an algorithmic visual programming language developed for the Buran space project. Its development, started in 1986, was directed by Vladimir Parondzhanov with the participation of Russian Federal Space Agency (Academician Pilyugin Center, Moscow) and Russian Academy of Sciences (Keldysh Institute of Applied Mathematics). The language was constructed by formalization, ergonomization and nonclassical structurization of flowcharts described in the ISO 5807-85 standard and Russian standard «Гост 19.701-90» and for the development of real time programs. The goal was to replace specialised languages PROL2 (ПРОЛ2) (assigned for developing onboard complex software for embedded computer system Biser-4 (Бисер-4) on board of Buran), DIPOL (ДИПОЛЬ) (assigned for developing software for ground maintenance computer system of Buran) and LAKS (ЛАКС) (assigned for modelling) used in the Buran project with one universal programming language.
This CASE is used since 1996 in many major space programs: an international project Sea Launch, Russian orbit insertion upper stage Fregat (Russian: Фрегат, frigate), upgraded heavy launch vehicle Proton-M, etc.
DRAKON rules for creating diagrams are cognitively optimised for easy comprehension, making it a tool for intelligence augmentation.
Family of DRAKON-languages
DRAKON is not a single language but a family of hybrid languages, such as DRAKON-C, DRAKON-Java, etc. All hybrid languages of the drakon-family have the uniform graphical syntax and differ in textual one. The standard graphical syntax provides visual similarity of drakon-charts of different hybrid languages. Every hybrid language of the family has its own textual syntax.
Strict distinction of the graphical and textual syntax along with rich graphics improves flexibility and variety of expressive means of the language. The unification of the rules of the graphical syntax in the hybrid languages secures their conceptual unity.
The basis of the graphical syntax is a graphical alphabet. Graphical elements (graphical letters) of the DRAKON alphabet are called icons (not symbols). There are 27 icons in the DRAKON graphical alphabet.
DRAKON has not only icons, but also macroicons. Macroicons are the graphical words of the DRAKON language. Just as words are made up of letters, macroiсons (graphical words) consist of the icons (graphical letters). There are 21 macroicons in the DRAKON language.
Icons and macroiсons are building blocks to construct drakon-charts.
The important parts of maсroiсons are valence points (see the illustration on the right, they are depicted as little black circles). Into these points, icons or microicons can be successively entered and arranged by drakon-editor in neat, orderly vertical rows.
The algorithm of going out of one's apartment:
Check-do (while) loop
The algorithm of eating lunch:
Do-check (do-while) loop
The algorithm of working out:
- Окулова Л. П. Проектирование образовательного процесса в соответствии с требованиями педагогической эргономики // Вестник. Наука и практика. Материалы конференции «Инновации и научные исследования, а также их применение на практике \ Innowacje i badania naukowe, jak rowniez ich zastosowanie w praktyce. — 29.05.2012- 31.05.2012. Варшава \ Warszaw».
- Штурманы ракет / Под общей редакцией Е. Л. Межирицкого. — М.: БЛОК-Информ-Экспресс, 2008. — 384 с. — C. 192. — ISBN 978-5-93735-008-4
- Technique of development of algorithms and programms "Grafit-Floks."
- V. Parondzhanov. How to improve the work of your mind. Algorithms without programmers - it's very simple! (Как улучшить работу ума. Алгоритмы без программистов - это очень просто! М.: Дело, 2001. - 360с.)
- S. Mitkin. DRAKON: The Human Revolution in Understanding Programs
This article may be expanded with text translated from the corresponding article ru:ДРАКОН in the Russian Wikipedia.
- History of DRAKON (in Russian)
- Transhumanism | DRAKON List of Internet Resources about Dragon (in Russian)
- DRAKON + Oberon = DRON visual programming language (in English)
- DRAKON + Oberon = DRON visual programming language (in Russian)
- DRAKON Editor for Windows, Mac and Linux.
- ИС Дракон for Windows.