Computer-aided design (about AutoCAD, could you please tell me about its history and learning skills? )

CAD (Computer Aided Drawing) was born in 1960s. This is an interactive graphics research program proposed by MIT. Due to the expensive hardware facilities at that time, only General Motors and Boeing Airlines of the United States used self-developed interactive drawing systems.

In the 1970s, when the cost of small computers dropped, interactive drawing systems were widely used in American industry.

In the 1980s, due to the application of PC, CAD developed rapidly, and companies specializing in CAD system development appeared. At that time, VersaCAD was a professional CAD production company, and the CAD software developed was powerful, but it could not be widely used because of its high price. At that time, Autodesk was a small company with only a few employees. Although its CAD system has limited functions, it is widely used in society because it can be copied for free. Meanwhile, due to the openness of the system. Therefore, CAD software is updated quickly.

Development of AutoCAD

1.autocadv (version)1.0:1982.1officially released, 360Kb floppy disk capacity, no menu, commands need to be memorized, and the execution method is similar to DOS commands.

2. AutoCAD v1.2:1983.4 was released with the function of dimensioning.

3. Autoadv1.3:1983.8, which has the functions of text alignment, color definition and graphic output.

4. AutoCAD V1.4:1983 438+00, and the graphic editing function is strengthened.

5. AutoCAD DV 2.0:1984.10, which adds graphics drawing and editing functions, such as: MSLIDE VSLIDE DXFIN DXFOUT VIEW.

Scripts, etc. So far, many factories and schools in the United States have copies of AutoCAD.

6. AutoCAD v2.17-v2.18:1985 is released, and the screen appears.

Menu, command need not be memorized, Autolisp has taken shape, two 360K floppy disks.

7.AutoCADV 2.5: 1986.7, AutoLISP has a systematic grammar, which users can improve and promote, and there is a new industry of the third developer, five 360K floppy disks.

8. AutoCAD V2.6:1986.11,adding 3D function, AutoCAD has become an inquiry course in American universities.

9. AutoCAD R (release) 9.0:1988.2, the drop-down menu of status line appears. At this point, AutoCAD began to encrypt sales abroad.

10. AutoCAD R10.0:1988.10, further improve R9.0, and Autodesk will become a thousand-person enterprise.

11.AutoCAD r11.0:1990.8, with AME (Advanced Modeling Extension) added, but sold separately from AutoCAD.

12. AutoCAD r12.0:1992.8, using DOS and WINDOWS operating environment, the toolbar appears.

13. AutoCAD r13.0:1994.5438+01,AME is included in AutoCAD.

14.

Autocad r14.0:1997.4, which adapts to Pentium model and Windows95/NT operating environment, realizes the connection with Internet network, and is more convenient to operate, faster to run and ubiquitous, and realizes Chinese operation.

15.

Autocad 2000 (AutoCAD R15.0):1999 provides a more open secondary development environment and an independent programming environment for Vlisp. At the same time, 3D drawing and editing are more convenient.

Version history

The development of AutoCAD can be divided into five stages: primary stage, development stage, advanced development stage, perfect stage and further perfect stage.

initial stage

Autocad1.0 ——198211month

AutoCAD1.2 ——1April 983

AutoCAD1.3 ——1August, 983

Autocad1.4 ——198310 month

Autocad 2.0-198410 month

stage of development

Autocad 2.17 ——1May, 985

Autocad 2.18 ——1May, 985

Autocad 2.5 ——1June, 986

Autocad 9.0 ——1September, 987

AutoCAD 9.03——

Advanced development stage

AutoCAD10.0 ——1August, 988

Dialog boxes of graphical interface began to appear, and the functions of CAD were relatively complete.

AutoCAD 1 1.0—— 1990

AutoCAD 12.0—— 1992

Dos version is the peak, with mature and complete functions, and provides a perfect AutoLisp language for secondary development. Many professional CAD of mechanical structure and circuit design are developed on this version. This version has many functions that the current version does not have. For example, 3Dface is obtained after the explosion of a solid, instead of becoming a surface solid or solid like the current version, and unlike 3Dface, vertices can be stretched separately.

perfect stage

Autocad r13 ——1June, 996

Autocad r14 ——1998 65438+October.

Autocad 2000-19991month

Further improvement stage

AutoCAD 2002 (R15.6)-June 2006 5438+0

AutoCAD 2004 (R16.0) —— March 2003

AutoCAD 2005 (R16.1)-March 2004

AutoCAD 2006 (R16.2) —— March 2005

AutoCAD 2007 (R17.0) —— March 2006

AutoCAD 2008 (R17.1)-March 2007

It has been published to AutoCAD 2009.

Family members of AutoCAD

AutoCAD Civil 3D

Provide better mapping, design, analysis and documentation solutions for the civil engineering industry, including land development, transportation and environmental projects.

AutoCAD electricity

AutoCAD Electrical belongs to Autodesk digital prototype manufacturing solution series, which is a leading application specially created for designing and archiving electrical control systems.

AutoCAD LT

Using AutoCAD LT software, the most popular 2D drawing and detail drawing product in the world, greatly improves the work efficiency.

AutoCAD Map 3D

A first-class engineering GIS platform for creating and managing spatial data. Use powerful AutoCAD tools to simplify the whole workflow and improve productivity.

AutoCAD machinery

AutoCAD Mechanical belongs to Autodesk digital prototype manufacturing solution series, which is the standard of two-dimensional mechanical design and drawing in manufacturing industry.