This document provides an overview of an electronics e-learning resource that covers several topics: 1) It introduces apps for learning electronics, basic electricity, and math for electronics. 2) It covers scientific notation and how to add, subtract, multiply and divide numbers in scientific notation. 3) It discusses using scientific calculators to display numbers in scientific notation. 4) It outlines opportunities in green technologies for electronic engineers and technicians and the skills needed to work in this sector.

2. Grow competencies
in Electronics
Grow competencies
in Basic Electricity
Learn Maths for
Electronics
Gain information on
work opportunities in
Green technologies
Learning
Objectives

5. Welcome to your Electronics
App
Electronics, An E-Learning Resource for
Technicians and Engineers
Click on resource below to open app

7. Well done on successfully
completing the electronics resource

8. Welcome to your Basic
Electricity App
Basic Electricity, An E-Learning Resource
for Technicians and Engineers.
Click on resource below to open app

10. Well done on successfully completing
the basic electricity resource

12. The nature of the electrical properties of electronic components is that
they often have their value or rating expressed in very big or very small
numbers.

13. Scientific Notation
Standard form or Scientific (Engineering) Notation is used when numbers
are very large or very small.
In scientific notation the number is written as a number between 1 and 10
multiplied by a power of 10.
The following examples show how to write numbers using scientific
notation.
(1) 5000 = 5 x 1000 = 5 x 10³
(2) 184 = 1.84 x 100 = 1.84 x 10²
(3) 16,280 = 1.628 x 10,000 = 1.628 x 10⁴
(4) 0.25 = 2.5/10= 2.5 x 10¯ˡ
(5) 0.0045 = 4.5/1000 = 4.5/10³ = 4.5 x 10¯³

14. Adding and Subtracting numbers in
scientific (engineering) notation
The easiest way to add and subtract numbers in scientific
notation is to convert each number to a normal number first.
For example (2.34 x 10⁴) + (1.82 x 10³)
= 23,400 + 1820 = 25,220
= 2.522 x 10⁴
Or (4.8 x 10¯ˡ) – (2.7 x 10¯²)
= 4.8/10¯ˡ -2.7/10¯² = 4.8/10 – 2.7/100
= 0.48 – 0.027 = 0.453 = 4.53x10¯ˡ

15. Multiplying and dividing in
scientific (engineering) notation
To multiply the numbers 1.8 x 10³ and 5.2 x 10², we multiply 1.8 by
5.2 and then multiply 10³ by 10²,
i.e. (1.8 x 10³)(5.2 x 10²)= (1.8 x 5.2) (10³ x 10²) = 9.36 x 10⁵
The same technique is used to divide the numbers 8.4 x 10⁴ by 1.2
x 10² = 8.4/1.2 x 10⁴/10² =7 x 10²
For example: If a= 5.2 x 10⁴ and b= 1.3 x 10³ using scientific
notation find a x b
a x b = (5.2 x 10⁴) x (1.3 x10²) = (5.2 x 1.3) (10⁴ x 10²) = 6.76 x 10⁶
For example: If a= 8 x 10⁴ and b= 4 x 10² using scientific notation
find a ÷ b
a ÷ b = (8 x 10⁴) ÷ (4 x 10²) = 8/4 ÷ 10⁴/10² = 2 ÷ 10²

16. Scientific calculators are used to display scientific notation, using the
or or buttons, for example to display 2500
in scientific or engineering notation, key in 2500 press =, press the Eng key and
the display is 2.5x 10³
lj E EDEE EXP ENG
Scientific or Engineering
notation using a calculator

18. Well done on successfully completing
the maths resource

19. There is a forceful impetus of Economic,
Environmental, Political, and Social factors
pushing the momentum of growth in the Green
energy sector.
Studies have highlighted current and future
needs for Electronic engineers and technicians
to oversee the development of the electricity
grid into a ‘smart distribution network’, using a
combination of electrical engineering and
ICT/business skills.

20. •Environmental Directives and Regulations; The Kyoto protocol and EU
& Domestic, carbon emissions targets and waste management targets.
•Environmental & Energy Concerns- leading to increased R&D
investment and global supply chain opportunities.
•Major economies have included ‘green’ initiatives as part of their
economic stimulus packages to help restart economic growth after the
recession.
•Technological Convergence is generating opportunities for innovative,
high-value products and services in green technologies.

21. The 2010
report from
Forfas, Ireland’s
policy advisory
board for
enterprise,
trade, science,
technology and
innovation,
states that;
Generating
renewables in
Ireland has
significant
positive
employment
potential.
An anticipated
total sector
employment
growth in jobs
of between
4,600 to 10,250
for the period
2010 to 2015.
The need for
better science,
electro-
mechanical,
maths and ICT
skills to
develop
Technician’s
skills
capabilities.

22. The finite nature
of fossil fuel
reserves, that in
the long term they
will eventually
become depleted
and substitutes
will have to be
found
The political and
economic
ramifications of
the majority of
fossil fuels being
concentrated in
relatively few
countries
Exploitation of
fossil fuel
resources has
resulted in
significant health
hazards and
pollution, for
example in coal
mining accidents
or fires on oil and
gas drilling rigs.

23. The generation of very
large quantities of carbon
dioxide (CO2); this is the
most important human-
generated greenhouse gas
Most of the world’s
scientists believe that
human-generated
greenhouse gas emissions
are causing the earth’s
temperature to increase at
a rate unprecedented since
the ending of the last ice
age.
Leading to big changes in
the world’s climate system,
causing disruption to
agriculture and
ecosystems, to sea level
rises that could overwhelm
some low-lying countries,
and to faster melting of
glaciers and polar ice.

24. On completing this eResource, I hope it benefits
your course aims, for any feedback please
contact me at,
markamaguire49@gmail.com