1. Issued by: Ms.c. Ameer Mosa Thoeny reference:
University of Technology
Computer engineering and information technology Department
AutoCAD
Issued by: Ms.c. Ameer Mosa Thoeny reference:
AutoCAD® 2006 and AutoCAD LT® 2006 Bible

2. CAD (Computer Aided Design)
University of Technology
Computer engineering and information technology Department
CAD (Computer Aided Design)
The CAD data base:
Electronically stored version of the drawing, keeps data in binary digital form.
These digits describe coordinate values.
Graphics Area.
The large central area of the screen.
Default size 12 units (x or horizontal) by 9 units (for vertical).
drawing limits can be modify as application.
When move the cursor the numbers in the coordinate display change.

3. University of Technology
Computer engineering and information technology Department

4. Command Line: Tool bars:
University of Technology
Computer engineering and information technology Department
Command Line:
The command line consist of the three text lines at the bottom of the screen.
Any command that is entered or any prompt that Auto CAD issues appear here.
Tool bars:
The standard toolbar is the row of icons nears the top of the screen:
(New, Open, Save, Print, Cut, Paste, etc.).
The object properties toolbar .
The draw and modify toolbar.
The status bar :
SNAP, GRID, ORTHO, POLAR, OSNAP, and MODEL.

5. University of Technology
Computer engineering and information technology Department

6. SNAP: to “snap” to regular interval (0.5 units).
University of Technology
Computer engineering and information technology Department
Drawing Aids:
SNAP: to “snap” to regular interval (0.5 units).
Grid SNAP.
Polar SNAP.
Grid:
To give a visual reference of units of length (0.5 units).
ORTHO:
Lines are forced to an orthogonal alignment.

7. Object SNAP MODES (OSNAP):
University of Technology
Computer engineering and information technology Department
Object SNAP MODES (OSNAP):
Center :
This OSNAP option finds the center of a circle, Arc, or Dount.
End point :
The End point option snap to the end point of a line, pline, spline, or Arc.
Intersection:
Using this option causes AutoCAD to calculate and snap to the intersection of any two objects.
Mid point:
The midpoint option snaps to the point of a line or arc that half way between the end points.

8. We can open Drafting settings :
University of Technology
Computer engineering and information technology Department
Insert.
Perpendicular.
Nearest.
Node.
Tangent.
We can open Drafting settings :

9. SETUP COMMANDS: units command :
University of Technology
Computer engineering and information technology Department
SETUP COMMANDS:
units command :
allows you to specify the type and precision of linear and angular units as well as the direction and orientation of angles to be used in the drawing. There are five types of units:
1. Scientific.
2. Decimal.
3. Engineering.
4. Architectural.
5. Fractional.
There are two ways to execute it:
Menu bar Format Units.
Command line: Units

10. University of Technology
Computer engineering and information technology Department

11. University of Technology
Computer engineering and information technology Department
Limits command :The limits command allows you to set the size of the drawing area by specifying the lower-left and upper-right corners in x,y coordinate values.
There are two ways to execute it:
Menu bar Format Drawing limits.
Command line: limits
Specify lower left corner or[ON/OFF]<0.000, 0.000>:x,y
Specify upper right corner< ,9.0000>:x,y

12. University of Technology
Computer engineering and information technology Department
Zoom Command: The ZOOM command enables you to zoom in and out of your drawing, Zooming does not affect the actual size of objects.

13. University of Technology
Computer engineering and information technology Department

14. There are many ways to execute it:
University of Technology
Computer engineering and information technology Department
There are many ways to execute it:
Menu bar ….. > view ……> zoom.
Command line: zoom
Specify corner of window, enter a scale factor (nX or nXP), or
[All/Center/Dynamic/Extents/Previous/Scale/Window] <Real time>: 2x

15. Q1: Create a new drawing with the following settings:
University of Technology
Computer engineering and information technology Department
Exercises:
Q1: Create a new drawing with the following settings:
You will use decimal units on your drawings.
Set up for a sheet of 300,220.
Set the values of grid and snap to 20.
Save the project as (shapes-dwg).
Q2: Start a new drawing set it up as follows:
Units: architectural.
Lower left limits:0,0.
Upper right limits:17:11.
Grid:1/2.
Snap:1/4.