Computer Aided Electrical Drawing: step by step

COMPUTER AIDED
ELECTRICAL DRAWING :

STEP BY STEP

A Guide for Beginner

Noraihan Ishak
Fasihah Arshad

A GUIDE FOR
BEGINNER

Computer Aided Electrical Drawing :

step by step

Noraihan Ishak
Fasihah
Arshad

Copyright © 2021
www.polimas.com
Polimas
Bandar Darulaman
06000 Jitra
Kedah.

e ISBN 978-967-0830-86-5

Noraihan binti Ishak
Fasihah binti Arshad

All rights reserved. No part of this
publication may be reproduced,
distributed, or transmitted in any form
or by any means, including
photocopying, recording, or other
electronic or mechanical methods,
without the prior written permission of
the publisher, except in the case of
brief quotations embodied in critical
reviews and certain other
noncommercial uses permitted by
copyright law.

[email protected]
[email protected]

PREFACE

The book is produced in order to provide basic knowledge of
the usage on AutoCAD software focusing on the application
of the software to produce drawings of graphics,
electrical/electronic symbols along with circuit schematics
and electrical wiring diagram specifically for polytechnic
students.

This book focuses on guiding readers to understand step by
step of the software. Through the chapters, reader are
provided with examples of drawing in order to have better
grasp of the command used in the software. Also at the end
of each chapter, Questions and Summaries are provided to
further enhance the understanding of the chapter.

TABLE OF
CONTENT

Chapter 1 : Concept of Computer
Aided Drawing

PAGE 03

Chapter 2 : AutoCAD Package

PAGE 10

Chapter 3 : AutoCAD commands
and data input techniques

PAGE 20

Introduction to Computer
Aided Drawing

Concept of Computer
Aided Desi`gn (CAD)

In this chapter you will learn:
Define Computer Aided Design (CAD)
Identify computer system and computer hardware minimum
requirements for CAD
CAD general and specific packages
CAD drawing to manual / conventional drawing
Applications and the advantages of CAD
Design hierarchy methodologies in electronics CAD.

Definition of Computer
Aided Design (CAD)

CAD is an acronym for Computer Aided Design or Computer Aided
Drafting.

CAD allows you to accomplish design and drafting activities using a
computer.

Can use CAD to draw a building plan, circuit diagram, chart, 3D

object and more (e.g technical drawings, automobile drawings,

aerospace drawings, and assembly drawings)

Minimum Requirements
for CAD

Processor Operating System

Basic: 2.5–2.9 GHz processor 64-bit Microsoft® Windows®
Recommended: 3+ GHz processor 8.1 and Windows 10.

Multiple processors: Supported Display Card
by the application
Basic: 1 GB GPU with 29 GB/s
Disc Space Bandwidth and DirectX 11
compliant
7.0 GB Recommended: 4 GB GPU with
106 GB/s Bandwidth and
Display Resolution DirectX 11 compliant.

Conventional Displays: Memory
1920 x 1080 with True Color
Basic: 8 GB
High Resolution & 4K Displays: Recommended: 16 GB
Resolutions up to 3840 x 2160
.NET Framework
supported on Windows 10
64-bit systems .NET Framework version 4.8
or later
(with capable display card)

List CAD General and Specific
Packages

Computer-aided design (CAD) software is used in many industries to produce
drawings physical objects (2D/3D technical drawings. The products in the General-
Purpose category include CAD programs that offer a wide range of tools and
functionality to their users.

Each CAD package has an advantage to make drawing easier.

01 AutoCAD

02 Onshape

03 SketchUp

04 Fusion360

05 AutoCAD LT

06 Inventor

Identify between CAD Drawing
to Manual / Conventional
Drawing

Increase productivity, Improvement of
efficiency and output/ product
accuracy quality

Uniformity of Reduction in
reproductions storage
space

Shorter time taken
in creating,
checking
and editing

Applications and the advantages
of CAD

Although there are many methods used to design and draft
activities, cad offers the following advantages over other methods
in many cases:

Improving productivity, Faster editing,
capability and accuracy. reviewing and
designing.

Improving quality of Save storage for
end product. drawing.

Design Hierarchy Methodologies
in Electronics CAD

Project Identification

A project or circuit to be designed is identified.

Design/Redesign Project

The project/circuit is designed based on theory

Simulation

The project designed is simulated using software
package to produce results/outputs of the project
operation. Failure to achieve results to satisfaction
will cause the project to be redesigned and
re-simulated

Testing

Project that yields satisfactory
simulation results will be
constructed in the laboratory to see
whether the project actually works
as in simulation.

PCB Design Layout

The printed project/circuit board
layout is designed and produced.

Prototype

An actual working model of the
project is constructed.

Understand AutoCAD
package

Concept of Computer
Aided Desi`gn (CAD)

In this chapter you will learn:
Features and capabilities of AutoCAD package
Execute AutoCAD using program icon CAD general and specific
packages
Show main menu functions
Show how to display toolbars needed for drawing
how to save finished drawing and how to exit AutoCAD

Features and capabilities of
AutoCAD package

Main features of Autodesk AutoCAD are:

3D Modeling and Visualization 2 Command Line

3 Ribbon Tabs and Panels 4 Tool Palettes

5 DWG and Image References

6 2D Drafting, Drawing and

Annotation

7 AutoCAD Mobile App

9 Layouts 8 Smart Dimensioning

11 Parametric Constraints

10 Text Settings

AutoCAD Using Program Icon

After installing AutoCAD, there are several ways to launch the
program.

1 Click Start. Browse through the program list to find AutoCAD.

Figure 1: AutoCAD from program list

AutoCAD Using Program Icon

After installing AutoCAD, there are several ways to launch the
program.

2 Type AutoCAD on the search bar and select AutoCAD from the

program list.

Figure 2: AutoCAD from search bar

AutoCAD Using Program Icon

After installing AutoCAD, there are several ways to launch the
program.

3 Find AutoCAD icon on your Desktop.

Figure 3: AutoCAD icon

References

https://knowledge.autodesk.com/support/autocad/learn-
explore/caas/sfdcarticles/sfdcarticles/System-requirements-for-
AutoCAD-2021-including-Specialized-Toolsets.html
https://www.g2.com/categories/general-purpose-cad