AutoCAD Crack + Keygen Free [Updated-2022]
Autodesk introduced AutoCAD LT for beginners in 1991, and added AutoCAD for Windows in 1997. The current AutoCAD is based on a complete redesign. AutoCAD LT and AutoCAD for Windows have been around since then.
AutoCAD is available on the PC, Mac, mobile and web. Since 2009, AutoCAD has included 2D and 3D line, polyline, polygon, circle, arc, spline, and text tools, vectors, solids, 2D and 3D views, ladders, tables, dimensions, chamfering, editing, print, and plot.
Getting Started with AutoCAD
The AutoCAD software is an integrated part of the AutoCAD Workstation. A Workstation is a computer with AutoCAD software running.
The previous version of AutoCAD was AutoCAD 2D only, with limited 2D drafting options and only 2D tools. But today, AutoCAD can run as a desktop app, as a mobile app, and as a web app. It has 2D, 3D, 3D modeling, and 3D printing capabilities.
Autodesk launched the first AutoCAD Workstation with the release of AutoCAD 2D in 1991, and has since released numerous editions.
AutoCAD 2D/2E Workstation
The original workstation had 128MB of RAM, a Pentium II processor, Windows 3.1 with a 20MB hard drive, and an interface that was essentially a mouse and a screen. It came with AutoCAD 2D, AutoCAD 2E, and an Adobe Photoshop drawing package, which contained several layers, layers to save drawing states, layer selection boxes, and other tools.
Today, the AutoCAD Workstation is a full-fledged AutoCAD installation. It has more sophisticated hardware, and Windows 7 with a 64-bit operating system.
AutoCAD for Windows/AutoCAD LT Workstation
AutoCAD for Windows was first released in 1997, and originally had 128MB of RAM, a Pentium III processor, Windows 95 with a 20MB hard drive, and an interface that was essentially a mouse and a screen. Like the AutoCAD 2D workstation, it had a set of 2D drafting tools, but it had no 3D capability.
In 1998, the AutoCAD workstation was renamed as Auto
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Objects 
AutoCAD Product Key is based on object-oriented programming (OOP) principles. It uses instance variables and methods to encapsulate data. The following is a list of examples of objects. 
 Object 
An object is an encapsulation of data and behavior. Objects are described by a class and have member variables and member functions, which specify how the object can be used. A class definition is called a class template. An object is an instance of a class template. 
OOP is also used to manage complex objects, such as CAD files.
Excel has a similar underlying object system, using collections of cells and arrays as the basic data storage and manipulation objects.
 Variables 
An object has a set of data that a program can use and modify, as well as a set of functions that can be called and which can operate on that data.
Object variables include:
 members - the data and the functions associated with an object
 public variables - the variables associated with an object, visible to all subprograms, but not accessible directly.
 private variables - the data and functions associated with an object which are not accessible from outside the object.
As well as simple data items, AutoCAD objects can have attributes, which are special variables that apply to the object.
 Methods 
AutoCAD allows objects to be manipulated using methods. Methods have the same properties as a function in most programming languages.  They are referenced by a call (for example, cmdobj1.AddUp()).
 Properties 
In the context of objects, a property is a member that can be accessed directly. In this case, the property contains a value or a set of values. For example, a cube has a center property, which contains the three points that make up its center. This is an example of a geometric property. 
An important difference between properties and attributes is that the former relate to a given object, while the latter can apply to an object or a collection of objects, as the case may be.
Common drawing properties include:
 A property's name – the text that the user enters to access the property
 The units of the property – the measure used for the data (eg, feet, meters, inches)
 The type of data stored – numeric, text, or date
The Attributes window allows users to change the values of properties and attributes. Properties are read-only and can be modified only through
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