What is CAD?: Computer Aided Design (CAD) is simply, design and drafting (2D or 3D computer models) with the aid of a computer.

Example of an CAD software is AutoCAD.

What is AutoCAD?: AutoCAD is computer aided design software developed by Autodesk Inc. It was first introduced in 1982 as a desktop application and since 2021.

This software package use for drawing and designing almost anything such as mechanical engineering, civil engineering and architecture.

*Saving AutoCAD Work: User are responsible for the safe keeping of the work with AutoCAD. Get into the habit of creating a folder for each project.

When user save work, AutoCAD will create a *.dwg file and a *.bak file of the work. The *.bak file is a backup copy of the *.dwg file.

The AutoCAD Display Screen: Before start drawing user need to get familiar with the AutoCAD window. All of the areas described below. So it is important for user to understand each of them.

How to start AutoCAD?: Start Button => All Programmes => Autodesk => AutoCAD 2013 English => AutoCAD 2013 English.

Function keys: Turn ON / OFF the feature
F1 – Help
F2 – Flip Screen
F3 – Object Snap
F4 – Tablet
F5 – Isoplane
F6 – Coordinate Display
F7 – Grid
F8 – Ortho
F9 – Snap
F10 – Polar
F11 – O Tack
F12 – Dynamic Input

Special Key:
Esc – Cancel the command menu or dialog box.
Enter – End a command or repeat the previous command if the command line is blank.
Space – End a command or will repeat the command if the command line is blank when entering the text.

Full Form:
WCS – World Co-ordinate System
UCS – User Co-ordinate System
2D – Two Dimensional (X,Y)
3D – Three Dimensional (X,Y,Z)

Coordinate System

Line (L): Line command is used to draw a line.
Example CAD001:
L <Enter>
@0,0 <Enter>
@5,0 <Enter>