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The first version of AutoCAD was based on the Autodesk MicroCAD. For most of its history, AutoCAD was available only on Microsoft Windows computers, running on Intel x86 and PowerPC microprocessors. Today, it is also available on macOS, iPadOS and iOS, Android, and Linux computers.

AutoCAD has been commercially successful, and has been called the best-selling CAD program of all time. It has more than eight million active users worldwide. Its yearly revenues are estimated at $1.4 billion.


AutoCAD was developed by Autodesk and was initially based on the Autodesk MicroCAD. This was initially released in 1980 as a menu-driven system that ran on low-cost minicomputers and was available only on MS-DOS computers, running on Intel x86 or Motorola 68000 microprocessors.

In 1981, as the release of the Macintosh computer approached, Autodesk realized that there would be great interest in creating a Mac version of their MicroCAD product, as the Apple computers were very popular with the design and drafting community at that time.

The original MicroCAD system was entirely menu-driven, but with the advent of the Macintosh, the emphasis was shifting to a window-based user interface. To design a system that could support both user interfaces, Autodesk developed a set of code libraries that they called Sketchwork. With Sketchwork, the system could load the MicroCAD or MacCAD code into memory and switch between the two based on the user’s choice.

The first release of the MacCAD product in September 1983 was a menu-driven program, with a window-based user interface. The new user interface was based on windowing systems used on the Macintosh. Unlike the original MicroCAD, which had been based on a menu-driven interface, the new MacCAD was based on a window-based interface.

MacCAD was first released in December 1983, and was available for the Macintosh only. It was the first commercially available computer-aided design (CAD) program for the Mac. One of the first things a new user of AutoCAD did was to change the name from MicroCAD to AutoCAD.

The first Macintosh with built-in hardware graphics chips was the Macintosh 128K. The first computers with built-in graphics controllers (and thus the ability to run Auto

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Real Business Software

In 2013, Autodesk introduced real-time collaboration tool that allows designers and other professionals to share information while creating a working project within Autodesk Revit or on any type of mobile device.

Revit Architecture

Autodesk Revit Architecture is a tool to create architecture projects, such as architecture projects and to work with them. It is a subset of the Building Information Modeling (BIM) of Autodesk Revit software. Autodesk Revit Architecture is a subset of Autodesk Revit software.

AutoCAD Architecture

AutoCAD Architecture is a tool for architects and other professionals to design and create building and structure projects.

AutoCAD Civil 3D


For Command Line version
Install the latest Autodesk Autocad version from
Open Autodesk Autocad command line interface by double clicking the icon
Enter the path to the exe (e.g. C:\Program Files (x86)\Autodesk\Autocad).
Set the path to Autocad file.
Type Autocad
Follow the prompts to authenticate.

In situ observations of 3D self-assembled nanotube networks.
Recent advances in the ability to probe nanoscale materials at the atomic level is enabling us to observe structure and function of these materials at scales inaccessible before. This has provided unique opportunities for detailed studies on in situ formation and structure of nanomaterials in time and space. These developments have led to fundamental understanding and creation of new advanced materials. Here we report the formation of an in situ self-assembled 3D nanotube network from multiwalled carbon nanotubes. The in situ observations of the growth and structure of the network were made by combining scanning transmission electron microscopy with atom probe tomography. Two mechanisms were observed during the network formation. The first mechanism, growth through carbon nanotubes stacking, was observed as the first carbon nanotube layer was deposited and grown. In contrast, the second mechanism, the partial interconnection between carbon nanotubes by graphitic carbon, was found to be the dominant process when the first layer of nanotubes was nearly full. Detailed structure and characterization of the formed 3D nanotube network using atom probe tomography reveal the formation of an interconnected, self-organized network of nanotubes with closely packed, cylindrical shape.Mitochondrial dysfunction in the aging human heart.
A progressive decrease in muscle strength and exercise capacity with age in humans is well documented. Mitochondrial dysfunction has been implicated as a cause of both age-related loss of muscle function and increase in age-related disease. We review the literature describing mitochondrial dysfunction in the heart as it relates to age-related dysfunction and age-related disease in the human heart. More specifically, we will review cardiac disease associated with mitochondrial dysfunction, the types of studies available for the study of age-related cardiac dysfunction, and our own observations regarding cardiac aging. Much of what we know about cardiac mitochondrial dysfunction in aging is based on animal models. Thus, we will review the current knowledge of cardiac mitochondrial dysfunction in models of aging in the context of the current

What’s New In AutoCAD?

More control and fewer learning curves with the new intuitive Drafting Assistant. With reduced clutter, you can focus on the task at hand, without distraction. You’ll get quicker results with the new Drafting Assistant, and it also includes added support for Automate and Measure from Point. (video: 6:00 min.)

Quickly view and share your designs with others through new multipart annotation, markup and annotation tools. With increased flexibility, you can quickly add and arrange text, lines, arrows, circles, ovals, and much more to annotate your design.

See the 3D modeling with perspective lines and editable layers in a 3D view. Let geometry help you know how your drawing will look to others.

Refine and customize your drawing appearance with more visual and interactive options. Choose your own palette, background, colors, icons, and lines and symbols.

Navigation controls make it easy to share your drawings with others and collaborate on them with your team, whether on desktop, mobile, or the web.

Bundling Benefits

New Improvements in 2023:

Augmented reality with new filters for Street View images and new motion paths.

Redesigned license. New features like added Express Tools for AutoCAD and AutoCAD LT, including improved Visio and enhanced 3D modeling tools.

Office 365 subscription options.

New RDS Server Viewer, in beta.

Cloud-hosted drawing services including PDF, drawing and image sharing and integration with Microsoft Teams, OneDrive, Slack and more.

Microsoft is committed to the development and improvement of AutoCAD, drawing tools for AutoCAD, drawing applications for AutoCAD, and computer graphics and visualization tools for AutoCAD.

To learn more about AutoCAD, visit our website at

New videos available:

Redesigned UI:

You’ve asked for it, and we’re delivering. We’ve redesigned the user interface and improved the overall look and feel of AutoCAD and AutoCAD LT. New sections in the GUI and a new tabbed experience allow you to focus on the task at hand.

Learn more at Autodesk University.

See what our user community has to say about AutoCAD and AutoCAD LT on the Reviews page.


System Requirements:

* Version:
* Supported OS: Windows, Mac, Linux
* Processor: Intel or AMD, 4.0+ GHz CPU;
* RAM: 4 GB
* VGA: 1024×768;
* Video Resolution: 800×600;
* Storage: 700MB hard disk space
* DirectX: Version 9.0, OpenGL: Version 3.3
* Sound Card: Unneeded
* Keyboard/Mouse: Unneeded
* Other requirements: Unneeded