AutoCAD is a commercial software application for 2D and 3D computer-aided design (CAD) and drafting — available since 1982 as a desktop application and since 2010 as a mobile, web- and cloud-based app marketed as 360. Developed and marketed by Autodesk, was first released in December 1982, running on microcomputers with internal graphics controllers. Prior to the introduction of , most commercial CAD programs ran on mainframe computers or minicomputers, with each CAD operator (user) working at a separate graphics terminal. is used across a wide range of industries, by architects, project managers, engineers, graphic designers, and other professionals. It is supported by 750 training centers worldwide as of 1994. As Autodesk's flagship product, by March 1986 had become the most ubiquitous CAD program worldwide. This tutorial is made by Alamin Shawon. FB: alamin.shawon.9