Operating equipment: Dell Yue Ling 7400.

Operating system: win 10

Operating software: CAD software version 2007

1, the computer opens the 2007 CAD software.

2. After opening CAD, enter the wall line command ML in the command bar, and press the space bar to confirm the command.

3. After entering the wall line command, enter the proportional command S, and press the space bar to confirm the command.

4. After entering the wall line command, enter the proportion of the wall line and press the space bar to determine the proportion.

5. After determining the wall line ratio, you can draw the wall effect.

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 used their own interactive drawing systems.

software development

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.