An AutoCAD drawing for a project called Preble, a US Army barracks-building program, in the late 1990s. In 2009, the government awarded a $160 million contract to Autodesk to upgrade the CAD software.

AutoCAD first achieved mainstream adoption when Apple Computer introduced its own engineering software, PageMill, in 1988. However, the first computer-aided engineering (CAE) software packages were introduced in the 1970s.

In the 1960s, the Soviet Union started the first heavy industrial automation efforts in the world. It released several multi-axis machine tools with computer controls, such as the German MPI, which was developed in the 1970s. The US military also started to incorporate computer-controlled machine tools into large fabrication plants, as illustrated by the prewar General Motors’ Fremont-Detroit plant.

In the late 1970s and early 1980s, digital computer processing became cheap enough to make CAD software affordable for individual users. CAD was originally created for the aerospace industry.

The first AutoCAD system was built in 1981 by Michael Cook and was used to create small drafting or technical illustrations. The first “serious” commercial version, with production-level quality and in a large format, was released in 1982.

It was not until the introduction of the Apple Macintosh in 1984 that mainstream adoption of CAD software in offices and firms took place. It was a significant step forward in the ability to create sophisticated drawings in desktop environments. The Apple Macintosh, with its graphical user interface (GUI), was easy to use and could run on any desktop computer. Before AutoCAD, such graphical CAD tools, which used DOS or Windows text-mode commands, were very difficult for non-technical users to use.

A National Library of Medicine survey released in 2005 found that the number of CAD software users worldwide is about 62.7 million.

In the US, in 2009, the federal government awarded a $160 million contract to Autodesk to upgrade the software.

The government’s requirement for a new CAD package was partly dictated by the US Army Corps of Engineers’s Preble (Project Preble) program. The Preble system was designed to allow soldiers to create a structure on the battlefield quickly and then expand that structure in real-time as more troops arrive. The Preble software was required to be powerful, user-friendly, and low-cost.

Other users include architects, engineers

Amigaos
AutoCAD R13 supports a number of APIs for customization and automation, including C++, Visual Basic.NET, Visual LISP and Visual Assist.
C++ API
C++ is used to:
customize the drawing window, including its toolbar and menus
implement scripts
add drawing tools
perform on-screen redraws
implement CAD geometry

APIs include:
AcadCAD – a set of C++ libraries that interact with AutoCAD, and that are used in place of the.NET API.

Visual Basic.NET API
Visual Basic.NET provides an easy to use object-oriented programming model for building AutoCAD extensions. It also includes a Visual LISP language, which is used to extend AutoCAD’s capabilities in the Visual LISP environment. The Visual Basic.NET API can be used to

Visual LISP
Visual LISP (VL) is a programming language. VL was initially created as an extension to AutoCAD that could be used for user-defined script tools, but has since been expanded into a general programming environment. Since the release of AutoCAD R14, VL has been the main programming language used in AutoCAD. VL is the preferred choice for extension development in AutoCAD R14, as the new API uses the Visual LISP environment and VL syntax. The VL environment is essentially a graphical development environment that features drag and drop editors for creating user interfaces and wizards to create the scripts.

Scripting
AutoCAD scripting can be used for:
adding additional functionality to the program
setting properties of objects
extending the capabilities of existing tools
implementing toolbars and menus

In AutoCAD R13 and earlier versions, the script language was Visual LISP. R13 and earlier allowed the use of external visual LISP files. This was often used to create custom dialog boxes for script tool builders.

With AutoCAD R14, there are two API’s available for scripting: the VBScript and VBS languages. VBScript is used for general scripting, including:
adding additional functionality to the program
setting properties of objects

VBScript can also be used for:
implementing toolbars and menus
adding functionality to existing script tools

VBScript allows Visual Studio users to program in VBScript. This can be installed in the program files on the hard drive.
5b5f913d15

Open the Autocad application.

Select File > New > Download Files.
Click the Autocad Plug-in Manager.
Click the Autocad Plug-in Manager.
Click the Autocad Plug-in Manager.
Click the + icon.

Enter the following information in the dialog box:

Installing to C:\Program Files\Autodesk\AutoCAD 2013

Location on disk: C:\Program Files\Autodesk\AutoCAD 2013
License: Microsoft Serial (Modified) License
Description: Autocad Plug-in Manager
Click OK.

Click the Application tab.

Select Autocad.
Click the Add button.
Click the Autocad Plug-in Manager.
Click the Install button.
Click OK.
Restart the Autocad application.

Close the Autocad application.

In Autocad 2013

Autocad 2013 creates a configuration file to register the Autocad Plug-in
for the Autocad application. If the Autocad application starts
without the Autocad Plug-in, then Autocad 2013 will not function.

To install the Autocad Plug-in for Autocad 2013, follow the same
procedure as for Autocad 2010.

Application User Guide – Autodesk AutoCAD 2013

Supporting Links

This document is subject to the Autodesk, Inc, license terms. By using or
accessing this document, you are agreeing to be bound by these terms.
License:

Permission is granted to copy and distribute the document, however it is
strictly prohibited to make direct commercial use of this document without
autorization of Autodesk.

This document may not be copied or distributed for direct commercial use. If
you are not Autodesk, you may print a copy for your own personal use. If you
are Autodesk, you may print a copy for your company only.

If you wish to copy the document for distribution to others, please see
“Copyright Notice” below.

Copyright 2009 Autodesk, Inc. All rights reserved.

Privacy Notice

Autodesk and/or its licensors do not grant any express or implied right
under copyright, patent, or other intellectual property rights to any
materials contained in the documentation or software provided herewith.

Measurement dialog box for better quality

AutoCAD now displays the measurement dialog box in a much more informative and user-friendly way, using larger font, box and color themes, and a new grid. (video: 1:32 min.)

Templates:

Save up to 50 templates for frequently used 2D drawing functions and reduce the need to re-enter data. Open your templates in the floating template toolbox and select an existing template, or create a new template from scratch. (video: 1:55 min.)

Object Snap:

Now you can draw smoothly and accurately, even in areas with overlapping features. AutoCAD now provides both hard- and soft-grid snap, displaying the most appropriate one for each drawing operation. A new Display Snap Position dialog box helps you to snap to a specific point, rectangle, and other complex shapes quickly and accurately. (video: 2:33 min.)

Drawing and Annotation Tools:

Add objects to your drawings in no time, faster than ever before. Add 3D shapes and mirror, flip, and shade views as well as create dimensional information in seconds. (video: 1:56 min.)

Dimensional Editing:

Add, edit, or compare dimensional information quickly. Easily add dimensions to a drawing, align them, or edit their information. Add dimensional information to drawings quickly and accurately. (video: 2:07 min.)

Word Wrap:

Draw on page boundaries more easily than ever before. Now you can edit 2D and 3D drawings more quickly, and design and create drawing layouts more intuitively. (video: 1:14 min.)

Import/Export:

Work with files you know and love. Import and export your files, view them on mobile devices and work on them more easily. (video: 1:33 min.)

Sharing:

Create files for sharing, including short videos, photos, and drawings, then share them from anywhere on any device. When you share, you can attach files that are saved on your desktop, share them from the desktop or mobile device, and then attach them to a message or email. (video: 1:45 min.)

New tools for a new age

Experience AutoCAD’s new, next-generation, user-experience (UX) and cloud-based technologies as well as the latest feature enhancements.

CPU: Intel® Core 2 Duo (or better) or Intel® Core i3
RAM: 2 GB
HDD: 1.2 GB
Disc Drive: 40 MB
OS: Windows XP or higher
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