做个备忘，写程序的时候用到版本号。从这个表也可以看出，1997年颁布的 R14 是一个AutoCAD的一个转折。R14版本以后，AutoCAD功能得到了极大的增强。
| Official Name | Version | DWG Tag | Release |
| AutoCAD Version 1.0 | 1 | 1 | |
| AutoCAD Version 1.2 | 1.2 | 2 | |
| AutoCAD Version 1.3 | 1.3 | 3 | |
| AutoCAD Version 1.4 | 1.4 | 4 | |
| AutoCAD Version 2.0 | 2 | 5 | |
| AutoCAD Version 2.1 | 2.1 | 6 | |
| AutoCAD Version 2.5 | 2.5 | 7 | |
| AutoCAD Version 2.6 | 2.6 | 8 | |
| AutoCAD Release 9 | 9 | 9 | |
| AutoCAD Release 10 | 10 | 10 | |
| AutoCAD Release 11 | 11 | 11 | |
| AutoCAD Release 12 | 12 | 12 | |
| AutoCAD Release 13 | 13 | 13 | |
| AutoCAD Release 14 | 14 | 14 | |
| AutoCAD 2000 | 15 | AC1015 | 15 |
| AutoCAD 2000i | 15.1 | AC1015 | 16 |
| AutoCAD 2002 | 15.2 | AC1015 | 17 |
| AutoCAD 2004 | 16 | AC1018 | 18 |
| AutoCAD 2005 | 16.1 | AC1018 | 19 |
| AutoCAD 2006 | 16.2 | AC1018 | 20 |
| AutoCAD 2007 | 17 | AC1021 | 21 |
| AutoCAD 2008 | 17.1 | AC1021 | 22 |
| AutoCAD 2009 | 17.2 | AC1021 | 23 |
| AutoCAD 2010 | 18 | AC1024 | 24 |
| AutoCAD 2011 | 18.1 | AC1024 | 25 |
| AutoCAD 2012 | 18.2 | AC1024 | 26 |
| AutoCAD 2013 | 19 | AC1027 | 27 |
| AutoCAD 2014 | 19.1 | AC1027 | 28 |
| AutoCAD 2015 | 20 | AC1027 | 29 |
| AutoCAD 2016 | 20.1 | AC1027 | 30 |
| AutoCAD 2017 | 21 | AC1027 | 31 |
| AutoCAD 2018 | 22 | AC1032 | 32 |
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