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Equipped with the right applications, a computer can be of great help in virtually any domain of activity. When it comes to designing and precision, no other tool is as accurate as a computer. Moreover, specialized applications such as AutoCAD give you the possibility to design nearly anything ranging from art, to complex mechanical parts or even buildings.
Suitable for business environments and experienced users
After a decent amount of time spent installing the application on your system, you are ready to fire it up. Thanks to the office suite like interface, all of its features are cleverly organized in categories. At a first look, it looks easy enough to use, but the abundance of features it comes equipped with leaves room for second thoughts.
Create 2D and 3D objects
You can make use of basic geometrical shapes to define your objects, as well as draw custom ones. Needless to say that you can take advantage of a multitude of tools that aim to enhance precision. A grid can be enabled so that you can easily snap elements, as well as adding anchor points to fully customize shapes.
With a little imagination and patience on your behalf, nearly anything can be achieved. Available tools allow you to create 3D objects from scratch and have them fully enhanced with high-quality textures. A powerful navigation pane is put at your disposal so that you can carefully position the camera to get a clearer view of the area of interest.
Various export possibilities
Similar to a modern web browser, each project is displayed in its own tab. This comes in handy, especially for comparison views. Moreover, layouts and layers also play important roles, as it makes objects handling a little easier.
Sine the application is not the easiest to carry around, requiring a slightly sophisticated machine to properly run, there are several export options put at your disposal so that the projects itself can be moved around.
Aside from the application specific format, you can save as an image file of multiple types, PDF, FBX and a few more. Additionally, it can be sent via email, directly printed out on a sheet of paper, or even sent to a 3D printing service, if available.
To end with
All in all, AutoCAD remains one of the top applications used by professionals to achieve great precision with projects of nearly any type. It encourages usage with incredible offers for student licenses so you get acquainted with its abundance of features early on. A lot can be said about what it can and can't do, but the true surprise lies in discovering it step-by-step.







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With AutoCAD 2018, Autodesk introduced 3D Building Design applications, called Revit (for Architecture) and eDrawings, a cloud-based file viewer and cloud-based design services. The software is designed for architects, engineers, drafters, artists, and other professionals.

History of AutoCAD

Autodesk first introduced AutoCAD in December 1982. At the time, it was the first commercially-available CAD software for desktop computers. AutoCAD was originally developed by the Autodesk division of Mc Graw Hill (now Adobe Systems) for the Apple Macintosh platform and introduced in November 1982. In January 1983, Autodesk acquired the CAD division of the computer graphics company Data Design Corporation (DDC). In 1987, Autodesk started marketing the software for IBM and IBM-compatible PCs.

The first 3D CAD software for the Apple Macintosh was 3D Building Design from American Software. Inc. in the early 1980s. According to MacWorld Magazine, American Software is the oldest publicly held commercial CAD software company. During the 1980s, American Software was acquired by the CAD software company Visicalc, which was then acquired by Autodesk.

AutoCAD became the second 3D CAD software for the Macintosh platform, the first being CADNAM, another American Software company acquired by Autodesk in 1988. It was released in September 1991. AutoCAD was released for the Macintosh platform in 1993, Microsoft Windows in 1994, and for the Atari platform in 1997.

Prior to the release of AutoCAD in 1982, Autodesk also introduced a desktop drafting application for the Apple Macintosh called DWG FileWriter, released in 1979.

In 1987, Autodesk introduced AutoCAD Map 3D, an AutoCAD extension allowing users to draw and view maps and layouts. In 1993, it was announced that AutoCAD Map 3D would no longer be produced.

In 1990, Autodesk acquired CHS Computers in Canada and began producing Revit and eDrawings for the Windows platform, using the.NET Framework. With the release of AutoCAD 2004 in 1997, AutoCAD was first released on the Internet.

First release

AutoCAD (Version 1.0, 1983) was first released as a desktop application. The original release included a range of features, including:

5D Modeling

Bar Graph View

Billboard View

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Because Autodesk AutoCAD Product Key and Autodesk Inventor, which are both based on the same native C++ API’s, are native (not Java or Flash), they have native interoperability, rather than the standard techniques of translators and proxies. AutoCAD Crack For Windows has native interoperability with the native.NET API’s that support all other applications within the suite.

Autodesk originally licensed AutoCAD to customers on a per-seat basis, but since 2002, Autodesk has charged for a one-time cost of AutoCAD plus additional annual maintenance fees. From the point of view of corporate executives, it is difficult to justify paying several hundred dollars a year for software that will, at the very best, only be used for a few more years. Given the declining margins on most corporate software, Autodesk has been under pressure to increase its per-seat revenue. Autodesk AutoCAD 2009 was introduced in 2007 and included a radical change in licensing terms. On August 6, 2007, Autodesk announced a new license model for AutoCAD and other software in the $200 per user range, which they dubbed the “Community License”. The Community License allowed the customer to use the software for up to three users for a period of three years. After three years, the software would then revert to a non-shared license.

In 2010 Autodesk acquired a Florida software startup, YouData, to enhance the company’s productivity tools portfolio, including Autodesk Inventor, Digital Prototyping for manufacturing and manufacturing software LiveLink Solutions. The company’s web-based collaboration and communication tool Ulead has also been integrated into AutoCAD.

In September 2010 Autodesk acquired two small firms, TrendLine and FRAP, to bolster AutoCAD capabilities for social media and business intelligence.

Acquisition of Decide + Co.

Autodesk acquired the “Decide + Co.” corporation, a consultancy, based in the United States, to enable the adoption of a cloud-based workflow in the mechanical design and engineering arena. The company was headed by Scott Wang. The acquisition was completed on October 30, 2010.

Acquisition of Digital Prototyping

Autodesk acquired Digital Prototyping, a Japanese firm which was known for its ‘whole body’ style of product design, on November 23, 2010. The acquisition aimed at unifying the way product

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Does the compiler/javac always have to treat Java source code as abstract syntax tree first?

It’s the most general question about Java programming languages.
I think it’s easy to explain the problem:
We can write a java code like this:
int a = 1;

This is a simple program, we can easily see that a is assigned 1 to a variable, but Java compiler never know that a is int type, compiler never know that the value of a is 1, so Java compiler will give us a syntax error.
It’s because Java compiler always treat Java source code as abstract syntax tree first.
So the question is :
Does the compiler/javac always have to treat Java source code as abstract syntax tree first?


Java compilers are designed to treat Java source code as abstract syntax tree first.

Not always, no. To quote the Java Language Specification 4.11:

Compilers for the Java programming language should compile programs in source form to a stream of tokens. However, they may generate bytecode or perform other operations in addition to generating a stream of tokens. […] A lexical analyser generates a stream of tokens from the source text. It is responsible for

identifying and categorizing the lexical and syntactic structures that comprise the source text

Turning the stream of tokens into bytecode or other forms of executable code is done by a Java compiler. The specification even provides a specification for compiling from Java source code to bytecode, although many compilers do not do this.

Not everything needs to be a tree. While you can, in theory, directly interpret the bytecode of a java program, they are not designed to be interpreted.


The Java compiler is required to evaluate your code’s variable types before your program can begin to compile.


I think it’s easy to explain the problem:
We can write a java code like this:
int a = 1;

This is a simple program, we can easily see that a is assigned 1 to a variable, but Java compiler never know that a is int type, compiler never know that the value of a is 1, so Java compiler will give us a syntax error.

That’s wrong

What’s New in the AutoCAD?

New styles and symbols:

Introducing a new style — “tape-style”— that makes using tapes more convenient. Quickly apply a color, or thickness, to any edge of a polyline or polygon. Use this for splicing, and it’s also a great way to create pattern fills and tape frames.

Introducing new symbols:

• Pipe (not shown in video): A pipe is a smooth, curved line that’s useful for reducing intersections. (note: You can right-click to customize a pipe’s size. To change the shape of a pipe, press the Ctrl key while you’re in the drawing.)

• Triangle: Create an angle for alignment, or to indicate a corner.

New tools:

• Try the new Quick Edit utility. Quick Edit lets you insert and delete a new line in any selection.

• Define a custom blank. When you press the Spacebar while drawing with the eraser, you’ll see a custom blank, which is just a horizontal or vertical line of any color. You can then erase the line with the Eraser tool to quickly start a drawing.

• Gain control over your objects. With the Object Label function, you can choose which properties and edit options you want to appear in labels for your objects. (See the Labeling sidebar for details.)

• Enhance your text. If you need to place a text box on an object, you can now choose the AutoText option. AutoText places a text box on the object, so you don’t have to draw one. (The text box has options for setting the text style and size.)

• Draw text with dynamic fonts. The new Dynamic Styles feature lets you use any font or style you want in a shape or text box.

• The Box tool lets you create rectangles, regular polylines, and elliptical arcs from single points and lines. (Also see new Grass polyline.)

• The SnapMode tool lets you snap objects to guide paths, edges, and arcs.

• Dynamic text shortcuts. Shortcut to an object’s label, so you can place text on an object with one click. (Note: You may need to change the text box size, depending on the font size used.)

Added features and improvements:

New on the Ribbon: In

System Requirements:

Operating System: Windows XP SP2, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10. Processor: 2.0 GHz or faster. Memory: 1 GB RAM. Graphics: 1024 MB DirectX. Hard disk space: 2 GB. Network: Internet connection. Sound card: Windows Vista SP2 and above.
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