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Released in 1982, the original AutoCAD 1.0 version was extremely rudimentary; it has since undergone a number of iterations and has been updated every year since then. In 2002, the product’s name was changed from AutoCAD to Autodesk AutoCAD. In 2014, AutoCAD was superseded by the Autodesk AutoCAD 360 suite, which encompasses AutoCAD and two other applications: AutoCAD Architecture and AutoCAD LT (formerly AutoCAD R14). A new version, AutoCAD 360 Project Premium, is due to be released in 2020.

Since its introduction in 1982, AutoCAD has evolved into a multi-app platform; today, the suite comprises AutoCAD, AutoCAD Architecture, AutoCAD LT, Autodesk 360 Project, and the Autodesk 3ds Max app. The other applications are available for free as part of the Premium AutoCAD software.

Last updated on April 25, 2020.

AutoCAD History AutoCAD 1.0, released in 1982, was based on the Soviet software MKS-2

(the company name “AutoCAD” was derived from “Autocomputer-Design”); it was the first application for designing and creating technical drawings, thus solving the problem of creating draughtsmen-friendly 2D drawings (via the use of “helping drawings”). Its use of a proprietary operating system, the AutoCAD is able to run on a minicomputer (e.g. VAX 11/780) as well as on mainframe computers (e.g. VAX 11/750). The AutoCAD system was written in IBM CPL, a language that consisted of multiple lines of code. Every command in AutoCAD was expressed as a single line. The first version of AutoCAD was based on the Soviet software MKS-2.

In 1987, AutoCAD 2.0 was released, and it was the first version with an object-oriented programming (OOP) component.

In 1989, AutoCAD 3.0 was released, introducing rudimentary 3D support and “printing” to the application.

In 1990, AutoCAD 3.5 was released, which included tabular data and spreadsheet tools and functions, and the ability to manipulate vector and raster graphics.

In 1991, AutoCAD 4.0 was released,

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CAD data exchange: Intergraph eGIS EXPRESS has integrated sharing of model data as well as the ability to import and export that data, and CAD model data interchange through the Intergraph Data Interchange Service.
CADR-X: A file format for CAD models, released in 2007 by Autodesk and the Fraunhofer Institute for Digital Media Technology, allowing the interchange of CAD models that are compliant with the Open CAD Interchange File Format.
CADR-W: A free format standard for CAD interchange. It was based on a previous standard by Autodesk, which they gave away when they discontinued the format.
MDS: A software interchange format. MDS is a software interchange format that is designed to facilitate model interchange from one type of CAD application to another. It is often compared to DXF. The MDS File Exchange and MDS.NET are both.NET libraries developed by Autodesk that allow MDS files to be easily read and written.
MIG: A standard for three-dimensional CAD data that contains interchange format for interchange between specific Autodesk products. MIG is a standard that is supported by both Autodesk and other CAD software companies.
XML Format: Extensible Markup Language (XML) is a computer file format based on SGML, the standard markup language of the World Wide Web.
Offering numerous interoperability, traceability and traceability, data quality, and CAD data exchange capabilities, Autodesk CAD integrates well with the rest of the Autodesk design and fabrication tool sets.
DWG (drawing): Autodesk has an industry-wide standard, the AutoLISP API, for drawing interoperability.
LT (Layered Technology): Autodesk provides a set of component libraries that are part of the LT (Layered Technology) API for 3D model interchange.

See also
List of AutoCAD programming extensions
List of Autodesk products


External links
Autodesk page for programming
Autodesk Labs
Autodesk Corporation

Category:3D graphics software
Category:CAD software for WindowsQ:

Why is the quadratic form $x^T C x$ positive definite when $C$ is a symmetric matrix?

Let $C$ be a symmetric matrix. I wish to prove that
$$x^T C x$$
is a positive definite quadratic

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They said this was supposed to be a fancy restaurant and when I ordered the $19.00 appetizer I was served, well, a plate of spaghetti with butter. I didn’t even touch it.

They advertised the lamb here and I was hoping that’s what they would serve. But, it was lamb riblets. The waitress looked like she was a bit embarrassed.

When I didn’t touch the appetizer, she served me a bite. It was tasty but I can’t eat riblets.

I had a look at the menu and read that they would be happy to fill any requests for food. I saw that the live lobsters were 1,600.00. I said, “Thanks, I’ll pass.”

I got the nymph and the crab. They also brought me two glasses of wine and a bottle of good California wine.

When I checked my receipt, it was only the price of the entree and the two glasses of wine. They must have taken the bill at the table.

I was done, so I didn’t ask them to change it.

It’s a nice day out, but I won’t be back. I’ll save my money for a steamed lobster in my backyard.

I said the only thing I could think of at the time and didn’t even notice, “I hope they don’t melt the lobster.” But I had to order the lobster and do a taste test before I ate it.

The lobster was delicious.

Would I eat here again? Well, I’d be a little careful what

What’s New In AutoCAD?

Use high-fidelity, interactive drawing models to work faster and smarter. With unprecedented accuracy, you can align, measure, cut, and even create contours—all with accurate, interactive models that appear in your drawing window. (video: 1:16 min.)

Markup Assist now supports CADDrawReview, which allows you to correct and improve CAD drawings quickly and easily with highly accurate editable models. (video: 1:36 min.)

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Using hyper-accurate, semi-automatic surface modeling, you can generate high-quality geometric models of your work-in-progress. The model can be exported and cut, sculpted, refined, and finished in your drawing, or pasted into another drawing and edited as a standard 2D drawing. The result is a third dimension without drawing steps. (video: 1:47 min.)

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New Grow & Move users benefit from our optimized multi-threading, advanced feature navigation, and enhanced 3D view geometry. Plus, you can now snap features to any alignment. (video: 1:32 min.)


Bring up blocks, splines, constraints, and add-ins directly from the drawing tool palette. (video: 1:41 min.)

Navigate using the new AutoCAD drawing navigation. If you’re working on your drawing, you can see the current drawing context, get to your master work area, and navigate to any drawing step. Plus, new technology finds the best context, even when you use overlapping hierarchies. (video: 1:43 min.)

Explore drawing solutions to fit your needs. You can explore a comprehensive set of drawing solutions that can be easily and securely managed with your Autodesk account. (video: 1:50 min.)

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Leverage the benefits of cloud storage and the AutoCAD Cloud. Create, open, and access your files securely from anywhere in the world. And, you can now sync your local and cloud drive data to a single folder and access from any device. (video: 1:44 min.)

Drawing Enhancements:

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System Requirements For AutoCAD:

• PC
OS: Windows 7 or later
Processor: Intel Core 2 Duo 1.5 GHz or better
Memory: 1 GB RAM
Graphics: GeForce 8600 or better
DirectX: Version 9.0c
Network: Broadband Internet connection
Hard Drive: 10 GB available space
Additional Notes:
• X360