This document provides an introduction to AutoCAD software, including its development history and user interface. It discusses various AutoCAD commands for drafting a floor plan and how to install the software. Key topics covered include units of measurement conversions, examples of using construction lines and circles, and methods for drawing circles such as by radius, diameter, or tangent points. The document aims to teach the basics of the AutoCAD interface and commands.

1. What you will learn here
1) Introduction to Auto Cad.
2) Cad Display Interface .
3) Discussion on Auto Cad Commands.
4)Drafting of floor Plan In Auto Cad.
5)How to install Auto Cad Software.

2. AUTO CAD DEVELOPED BY AUTODESK COMPANY IN 1982
FOUNDER – JOHN WALKER

13. AUTO CAD USER INTERFACE

14. UNITS CONVERSIONS
100 CM 1M
1000M 1KM
1.67KM 1 MILE
12 INCHES 1 FEET
3 SQ FEET 1Yard( 3.3 square feet)
 48 Sq Yard 1 cent
100cent 1 Acre
1 Inches 2.5 CM
4 Inches 10 CM
6 Inches 15 CM
9 Inches 22.5 CM
12 Inches 30 CM
10 Feet 3 M
1 Sq m 10.76 Sq ft
1 Sq feet 0.093 Sq m
1 Sq Yard 0.836 Sq m 9 Sq ft
1 Gunta / Guntha 101.17 Sq m 1089 Sq ft
1 Cent 40.47 Sq m 435.6 sq ft
1 Acre 4046.86 Sq m 43560 Sq ft 100 Cents 40 Guntas

15. EXAMPLE :- 1

16. EXAMPLE :- 2

17. Project 2D
1) Construction line / infinity line / xline
Short cut -XL
XL ENTER
Horizontal H Enter (Specify location )
Vertical V Enter
Angle A Enter ( specify angle)
Bisect B Enter
Select base point select first reference line specify second reference
line
Offset O Enter
Specify offset distance select line
2) Circle and Circle s method
 center, radius
Center , diameter
2 point method
3 point method
TTR (tangent, tangent, radius)
TTT (tangent, tangent, tangent)

18. Project 2D
Circle C Enter
Radius C Enter
Specify radius of circle
Diameter:-
Circle C Enter
Select centre point
Diameter D Enter
Specify diameter of circle
2 Point Method:-
C Enter
2 po Enter
Select first end point of circle diameter
3 point method:-
C Enter 3p enter
Select first end point
Select second end point
Select third end point