Editing BESM (section)

===BESM-3M and BESM-4===
''BESM-3M'' and ''BESM-4'' were built using [[transistors]]. Their architecture was similar to that of the [[M-20 (computer)|M-20]] and [[M-220]] series.{{cn|date=April 2024}} The word size was 45 bits.{{cn|date=April 2024}} Thirty BESM-4 machines were built. BESM-4 was used to create the first ever [[computer animation]].<ref>{{cite web|url=http://www.etudes.ru/ru/mov/kittie/|script-title=ru:Кошечка - Математические этюды|language=ru|trans-title=Cat - Mathematical Etudes |archive-url=https://web.archive.org/web/20110510203746/http://www.etudes.ru/ru/mov/kittie/|archive-date=10 May 2011|url-status=live|access-date=28 May 2011}}</ref><ref>{{Cite web|url=http://www.geekosystem.com/kitty-computer-animation-russia-1968-video/|title="Kitty": One of the First-Ever Computer Animations|website=www.geekosystem.com|date=22 March 2010 |language=en|access-date=21 April 2018}}</ref> The prototypes of both models were made in 1962–63, and the beginning of the series release was in 1964.<ref>{{Cite book|url=https://books.google.com/books?id=fLCEXWkQXvQC&q=%D0%B1%D1%8D%D1%81%D0%BC-3%D0%BC&pg=PA401|title=Профессиональное программирование. Системный подход, 2 изд.|last=Олегович|first=Одинцов Игорь|date=2004|publisher=БХВ-Петербург|isbn=5-94157-457-6|page=401|language=ru|trans-title=Professional programming. A Systems Approach, 2nd ed.}}</ref>

[[Epsilon macro language|EPSILON]] (a [[Macro (computer science)|macro language]] with high-level features including strings and lists, developed by [[Andrey Ershov]] at [[Novosibirsk]] in 1967) was used to implement [[ALGOL 68]] on the M-220.<ref>{{cite web|title=EPSILON macro language| url=http://foldoc.org/index.cgi?query=EPSILON&action=Search|access-date=29 May 2007}}</ref>