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A legacy of the software’s original 1982 release is that AutoCAD typically runs on only a single display (screen) and has no native support for 3D graphics. However, a variety of third-party plug-ins are available. AutoCAD typically runs on platforms like Windows, macOS, and Linux (and occasionally on versions of iOS). AutoCAD 2018, the current version, was released on May 23, 2018.

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History

AutoCAD was created at the San Rafael, California-based software development company Autodesk, Inc. It started as a low-cost, “do it yourself” CAD program, but was later rewritten by a larger team at Autodesk. Originally, the program was designed for Windows and was written in the Turbo Pascal programming language; it was rewritten by using C++ and later Visual Basic. The last version of AutoCAD written in Turbo Pascal was AutoCAD 2009, but many CAD users still use previous versions for “legacy purposes” (until the latest version of AutoCAD is released).

Overview

AutoCAD is a 2D CAD application, with some limited support for 2D drafting. In addition, a 3D modeling software development kit (SDK) is available, which allows users to import and export 3D models. In this case, “3D” is used as a generic term to refer to geometry. “3D” in AutoCAD 2018 is a synonym for “geometry” or “objects”.

AutoCAD was originally designed to solve drafting problems, but the product has grown to fill the functions of a large-scale CAD software package. That is to say, in addition to being a CAD program, AutoCAD is a more general-purpose, customizable, object-oriented programming language, with functions that are useful to other disciplines as well.

Features

Multi-User

AutoCAD is multi-user, allowing up to 20 users to work simultaneously on the same drawing. This feature gives students and other professionals access to the program without purchasing a software license, and helps teachers use AutoCAD as a classroom tool. Up to 20 users can work simultaneously on one document, such as the same drawing or a presentation of a design. This is accomplished through the use of “docking stations”, which are terminals that allow for the connection of the many peripheral devices that are needed for the creation of drawings.

Export

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AutoCAD also supports F&F (Formula and Function). Formula and Function is a mode for entering formulas and calculating values. In AutoCAD Architecture, this is found in the field properties and in the tool properties, where you can enter and use formulas to display the result of the formula in a value field.

Third-party applications
AutoCAD has more than 1,000 add-on applications available for it. These applications are usually called AutoCAD plugins, add-on tools, or add-on applications. These are third-party tools that enhance the functionality of AutoCAD. Some are available through the Autodesk Exchange Apps Store.

Since AutoCAD is cross-platform, it can be run on Microsoft Windows, Apple macOS, and Linux operating systems. The main operating system for running AutoCAD is Windows. There are also less common Linux-based and macOS-based operating systems available for AutoCAD.

The “Plugins” system allows you to run third-party software or templates inside the AutoCAD environment, or on your hard drive. You can also use Plugins to create custom projects or drawings with third-party software on your computer. The Plugins system is based on the Open Call plugin system. This is similar to the Open Sound Control (OSC) system that supports connecting Plugins in a distributed software and hardware architecture. Autodesk have developed the AutoCAD Library to contain a range of Plugins that people can access for free. AutoCAD uses the concept of “Docking” to display and use Plugins.

The Plugins are added to a project, usually by a technician, engineer, architect, project manager or vendor. Plugins can be used to model larger and more complex projects that require more sophisticated software. Plugins are most often used by those who design building and construction projects. Plugins can be used for complex project templates to improve the workflow and reduce design time. This includes for example working with family-run business structures, using 3D structural software, using specialized CAD software, creating sketches from paper notes and schematics, creating a project template that is used for all projects, creating a project archive for reuse, using imported data from other CAD applications, and many others.

User interface

Main user interface

AutoCAD comes with an interface called the “Command line Interface” (CLI). The CLI is the standard way to create and edit AutoCAD
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Go to the menu:

1. View
2. Preferences
3. Extensions
4. Enable AutoCAD extension and click on OK
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Combined effects of multi-walled carbon nanotubes and co-occurring MnO2 nanoparticles on removal of toxic metal ions from water.
A nanocomposite of multi-walled carbon nanotubes (MWCNT) and MnO2 nanoparticles (MNPs) was prepared and applied for removal of toxic metal ions. The influences of parameters including pH, amount of MWCNT, MnO2 and contact time on adsorption were systematically investigated. The results showed that the MWCNT-MnO2 nanocomposite has a great potential for treatment of Zn2+, Cd2+ and Pb2+ from the aqueous solution. Furthermore, the adsorption rate of Zn2+, Cd2+ and Pb2+ on MWCNT-MnO2 was higher than that on raw MWCNT. The adsorption kinetics data showed that the adsorption of Zn2+, Cd2+ and Pb2+ onto MWCNT-MnO2 followed the pseudo-second-order model. With increasing the MnO2 dosage, the adsorption of Zn2+ and Cd2+ decreased, while the adsorption of Pb2+ increased. And, the ratio of Mn/Zn and Mn/Cd in MWCNT-MnO2 increased significantly. The adsorption of Zn2+, Cd2+ and Pb2+ was observed in the order: Pb2+>Cd2+>Zn2+. Thermodynamic studies indicated that the adsorption of Zn2+, Cd2+ and Pb2+ on MWCNT-MnO2 was a spontaneous and exothermic process.Multiple arterial aneurysms associated with a long segment occlusive iliac artery disease. Case report.
A patient with multiple arterial aneurysms associated with a long segment occlusive iliac artery disease is presented. Following surgical correction of the iliac artery disease, a conventional aortofemoral bypass was done. Postoperative aortography revealed no residual aneurys

What’s New in the?

(video: 1:15 min.) Revise marks on an imported drawing with marker assist. Easily add, delete, and modify a revision, and the design environment automatically adjusts the underlying drawing as necessary. (video: 1:05 min.)

(video: 1:05 min.) Automatic scale and offset:

Assign a scale and offset to imported 3D geometry when importing from a 3D model or vice versa. Scale the entire model and/or offset the imported geometry. (video: 2:05 min.)

Clone, merge, and split:

Clone a layer or section, merge multiple layers into one, and split a section into several. Easily select layer or section from the Revision tool and copy or merge from the same selection. (video: 1:45 min.)

(video: 1:45 min.) Improved 3D drawing tools:

Set the 3D viewing plane based on the active drawing and snap to it. (video: 1:07 min.)

(video: 1:07 min.) Make 3D drawings more interactive by moving and resizing dimensions and aligning parts. (video: 1:45 min.)

(video: 1:45 min.) AutoCAD 3D Parts: (video: 2:40 min.)

(video: 2:40 min.) Color your 3D parts and groups to get a better overview of them in the layout.

Simplify revision history:

Revision history is an essential component in any CAD application. Sometimes, it can be overwhelming. Its size can easily grow beyond its ability to be managed or viewed. In AutoCAD 2023, simplify revision history with the new History Clear Command. It allows you to quickly remove the old revision history from your drawing or from all opened drawings. (video: 2:30 min.)

(video: 2:30 min.) New windowed view option for large-format drawings:

Slim down a large-format drawing and increase its readability by showing the view window behind it. (video: 1:55 min.)

AutoCAD 2023 delivers the best AutoCAD experience to meet your design challenges today and tomorrow. Stay in touch with us on Twitter (@AutoCAD) to hear about the latest improvements.

Learn more about the new features in AutoCAD 2023 at

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System Requirements:

Microsoft Windows® 10/Windows® 8/Windows® 7 (64-bit only)
Microsoft.NET Framework 4.7 or higher
3 GHz or faster processor
1 GB or more RAM
12 GB or more available space
DirectX® 11
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