L1 - INTRO TO CAD AND AUTOCAD

COMPUTER AIDED DRAFTING/COMPUTER AIDED DESIGN

CAD means…

CAD

It uses computer systems to help create, modify, analyze, and optimize a design. 

AUTOCAD

__________ is Autodesk's commercial CAD application for 2D drafting and 3D modeling. The course mainly uses it to build drafting skills. 

ACCURACY AND PRECISION

Produces geometrically exact lines, circles, and other objects. 

EFFICIENCY AND SPEED

Commands such as Copy, Mirror, and Array reduce repeated work.

STORAGE AND PORTABILITY

DWG files are easy to store, back up, and share. 

READABILITY

Uniform text and lineweights produce neat drawings.

3D VISUALIZATION

Models provide a clearer view of a final product. 

1957

YEAR : Patrick J. Hanratty developed PRONTO, the first commercial numerical-control programming system. 

1963

YEAR : Ivan Sutherland created Sketchpad, which used a light pen and introduced fundamental graphical interaction concepts. 

1969

YEAR : MAGI released SynthaVision, a pioneering solid-modeling system for 3D visualization. 

1982

YEAR: Autodesk was founded and launched AutoCAD 1.0 for standard personal computers. 

1985

YEAR: AutoLISP introduced custom commands and task automation. 

1990s

YEAR: AutoCAD moved from DOS to Windows; R14 (1997) helped establish it as an industry standard. 

2009

YEAR: The Ribbon interface was introduced. 

2010s TO PRESENT

YEAR: AutoCAD developed into a subscription-based, cloud-connected platform with mobile and web apps. 

DOS ERA

Interface milestone for R12

EARLY WINDOWS

Interface milestone for R14

CLASSIC INTERFACE

Interface milestone for 2006

FIRST RIBBON

Interface milestone for 2009

MODERN AI-ASSISTED INTERFACE

Interface milestone for 2025

WIREFRAME, SURFACE, SOLID

Types of 3D Modeling

DRAW

Creates objects: LINE, CIRCLE, ARC, RECTANGLE, POLYGON, ELLIPSE, PLINE. 

MODIFY

Changes existing objects. 

DISPLAY

Controls the view: ZOOM, PAN, REGEN.

GRAPHICS WINDOW

Main area for creating, viewing, and editing objects. 

CROSSHAIR

Cursor used to draw and select points. 

PICK BOX

Small square at the crosshair center used to select objects. 

STATUS BAR

Contains Grid, Snap, Ortho, Polar Tracking, OSNAP, Dynamic Input, Lineweight, and Model/Layout controls. 

TITLE BAR

Shows the current drawing name and active window. 

TOOLBAR

Provides shortcut buttons for commands. 

TOOLTIP

Displays a command description when the pointer rests on an icon. 

DOCKED TOOLBAR

A toolbar that is attached to an edge

FLOATING TOOLBAR

A toolbar that moves freely

PULL-DOWN MENU

Older menu system containing File, Edit, View, Draw, Dimension, Modify, and other menus.

COMMAND WINDOW/LINE

Accepts typed commands and displays AutoCAD prompts

CTRL 9

A keyboard command to show/hide the command line

COMMAND HISTORY

Shows earlier commands, prompts, errors, and missing inputs.

RIGHT CLICK DRAWING AREA, OPTIONS, DISPLAY, COLORS, 2D MODEL SPACE, UNIFORM BACKGROUND, CHOOSE COLOR, APPLY AND CLOSE, OK

Correct sequence for changing graphics-window color

OPTIONS, DISPLAY, CROSSHAIR SIZE, ADJUST SLIDER, APPLY, OK

Correct sequence for changing crosshair size

OPTIONS, DISPLAY, COLORS, CROSSHAIRS, CHOOSE COLOR, APPLY AND CLOSE, OK

Correct sequence for changing crosshair color

OPTIONS, SELECTION, PICKBOX SIZE, ADJUST SLIDER, APPLY, OK

Correct sequence for changing pick-box size

OPTIONS, DISPLAY, CHECK OR UNCHECK ROLLOER TOOLTIPS OR SHOW TOOLTIPS, APPLY, OK

Correct sequence for turning tooltips on/off

STANDARD TOOLBAR, PULL-DOWN MENU, COMMAND PROMPT

Starting command can be done using the _____, ____, or ______

ESC

Keyboard shortcut that cancels the active command

ENTER

Keyboard shortcut that completes or repeats a command. 

GRID

a visual drawing guide

F7

Keyboard shortcut to toggle the grid on/off

GRID SETTINGS

Grid X and Grid Y spacing can be set through ______

ABSOLUTE RECTANGULAR, RELATIVE RECTANGULAR, RELATIVE POLAR

3 Coordinate methods in AutoCAD

X,Y

Format for Absolute rectangular

@X,Y

Format for Relative rectangular

@DISTANCE<ANGLE

Format for Relative Polar

C

Keyboard shortcut to close the shape in the LINE examples