Windows 0

{|"class="wikitable" !Version !Release Date
 * 0.9
 * January 1985
 * 0.875
 * October 1984
 * 0.8
 * March 1984
 * 0.75
 * October 1983
 * 0.7
 * May 1983
 * 0.625
 * September 1982
 * 0.6
 * July 1982
 * 0.5
 * September 1981
 * 0.4
 * November 1980
 * 0.375
 * September 1980
 * 0.3
 * January 1980
 * 0.25
 * October 1979
 * 0.2
 * March 1979
 * 0.125
 * July 1978
 * 0.1
 * May 1978
 * 0.0
 * July 1977
 * January 1980
 * 0.25
 * October 1979
 * 0.2
 * March 1979
 * 0.125
 * July 1978
 * 0.1
 * May 1978
 * 0.0
 * July 1977
 * 0.1
 * May 1978
 * 0.0
 * July 1977
 * July 1977