Green computing aims to reduce the environmental impact of computing through more efficient use of computing resources and recycling of electronic equipment. It involves approaches like virtualization to reduce hardware needs, power management to improve efficiency, using more energy efficient displays, and recycling materials. While green computing can help the environment, it may increase costs and equipment may be underpowered. However, as technology advances, devices are using less power while renewable energy sources improve.

1. GREEN
COMPUTING : A
PARADIGM SHIFT
Presented By : Ritika
Mahanta
BCA 5th Sem
Guided by : Dr.
Sarbeswara Hota

2. CONTENTS
What is Green
Computing?
Examples of
green computing
Approaches to
Green Computing
Virtualization
Power
Management
Power Supply
Storage Displays
Materials
Recycling
Implementations Advantages Limitations
References Conclusion

3. What is Green
Computing?
Green computing is the study and
practice of using computing
resources efficiently.
The goals are similar to green
chemistry; reduce the use of
hazardous materials, maximize
energy efficiency during the
product's lifetime, and promote
recyclability or biodegradability of
defunct products and factory waste.

4. Examples of green computing
Purchasing from
Environmentally
Committed
Companies.
1
Participating in
Electronic
Recycling
Programs.
2
Deploying
Virtual
Technologies.
3
Limiting Printing
and Recycling
Paper.
4

5. Who invented Green
Computing
The term Green computing came into existence with
the launch of Energy Star program in 1992 by U.S
environmental protection agency. It aims towards
electricity saving and less amount of heat generated
by the computers. Widespread use of computers and
related IT products has a very bad effect on the
environment.

6. Approaches to
Green Computing

7. Virtualization
Computer virtualization is the
process of running two or more
logical computer systems on one
set of physical hardware. It is one
of the hardware reducing , cost
saving & energy saving technology.
On a server or a desktop PC, it
allows multiple Operating System
& Application to run on a single
computer.
The software that makes this
possible is known as Hypervisor.

9. Why do we need to
virtualize?
1. We can run multiple servers on one single
physical server thus reducing the usage of
hardware and saving money.
2. We can upgrade virtual machine hardware
with just a mouse click.
3. Disaster Recovery : Virtual machinery are files
so the entire vm(virtual machine) can backed
up.We can not only create a backup for the data
but the installed programs and OS as well.

10. Power Management
The Advanced Configuration & Power
Interface(ACPI) , an open industry standard,
allows an operating system to directly control
the power saving aspects of its underlying
hardware.
Power management for computer systems are
desired for many reasons, particularly:
1. Prolong battery life for portable and
embedded systems.
2. Reduce cooling requirements.
3. Reduce noise.
4. Reduce operating costs for energy and
cooling.

11. How to enable ACPI on machine
Click the 'Device Manager' button
Expand the Computer object
Its type will be shown, probably 'Standard PC' (if it says (Advanced Configuration and Power Interface
(ACPI) PC then ACPI is enabled already)
Click here to view image
Right click on the Computer type and select Properties
Select the 'Driver' tab
Click 'Update Driver'
The Upgrade Device Driver Wizard will start. Click Next
You can now either ask it to find a driver or manually select
If you select Manual select the 'Show all hardware of this device class' and select the ACPI driver. Click
Next
Click Next to install the driver
Click Finish to the wizard and click Close the computer property driver dialog
Click Yes to restart your computer

12. Power Supply
• Power supplies in most computers (PSUs)
aren't designed for energy efficiency. In
fact, most computers drain more power
than they need during normal operation,
leading to higher electrical bills and a
more dire environmental impact.
• Various initiatives are underway to
improve the efficiency of computer
power supplies. Climate savers
computing initiative promotes energy
saving and reduction of greenhouse gas
emissions by encouraging development
and use of more efficient Power supplies.

13. Climate
Savers
Computing
Initiative

14. Storage
There are three routes available, all of which
vary in cost, performance, and capacity.
SSDs may use more power than hard disks,
(e.g., 4GBi-RAM uses more power and space
than laptop drives).

15. GREEN STORAGE
To reduce the amount of carbon
dioxide released into the
atmosphere as result of day to day
activities of a particular
organization is called green
storage.
The real goal of green storage is
not just being environment-
friendly, but also lowering costs,
improving the efficiency of
resources, and preserving energy.

16. TAPES
Tapes are still a popular solution for
reducing carbon footprints(carbon
dioxide released) because it has no
parts that uses energy and has more
shelf-life(length of a time a product
may be stored)than other methods of
storage and it is portable. Tape systems
consumes about 87% less energy than
equivalent amounts of hard disk
storage and can produce up to an 87%
reduction in CO2 emissions.
Storage Capacity – 100 MB to 200 GB
This Photo by Unknown author is licensed under CC BY.

17. Scientists have created the largest computer
chip yet to be made from carbon nanotubes:
rolled up sheets of atom-thick graphene that
conduct electricity at super-fast speeds.
Some researchers hope to use
carbon nanotubes in future computers
because they conduct electricity faster and
more efficiently than silicon does.​

18. Displays
LCDs are up to 66% more energy efficient than CRTs,
LCDs are also upwards of 80% smaller in size and
weight, leading to fuel savings in shipping.
LCDs produce less heat, meaning you'll need less AC
to keep cool.
LCD screens are also easier on the eyes. Their lower
intensity and steady light pattern result in less
fatigue versus CRTs.

19. Why does CRT
consume more
power
There has to be a heated filament
so electrons can flow off of the
cathode. There is a high voltage
power supply and a yoke coil that
needs power to move the electron
beam back and forth on the
screen. For instant on the CRT uses
a small amount of power to keep
the cathode warm.

20. Materials
Recycling
• Computer recycling refers to recycling
or reuse of a computer or electronic
Waste. This can include finding
another use for the system (i. e.
donated to charity), or having the
system dismantled in a manner that
allows for the safe extraction of the
constituent materials for reuse in
other products.
• Additionally, parts from outdated
systems may be salvaged and recycled
through certain retail outlets and
municipal or private recycling centres.

21. What is
green
disposal in
green
computing?
Green Disposal: Recycling unwanted
electronic equipments.
Green Design: Designing energy
efficient computing devices.
Green Manufacturing:
Manufacturing computing devices
with no impact on the environment.

23. Implementation
Blackle
Fit-PC: a tiny PC
that draws only
5w
Zonbu
Computer
The Asus Eee PC
and other ultra
portables

24. Blackle
Blackle is a search-engine site powered by
Google Search.
Blackle came into being based on the
concept that when a computer screen is
white, presenting an empty word page or
the Google home page, your computer
consumes 74W.When the screen is black it
consumes only 59W.
Based on this theory if everyone switched
from Google to Blackle, mother earth would
save 750MW each year.

25. Fit-PC: a tiny PC that
draws only 5w
Fit-PC is the size of a paperback and absolutely
silent, yet fit enough to run Windows XP or
Linux.
Fit-PC is designed to fit where a standard PC is
too bulky, noisy and power hungry. If you ever
wished for a PC to be compact, quiet and green –
then Fit-PC is the perfect fit for you.
Fit-PC draws only 5 Watts, consuming in a day
less power than a traditional PC consumes in 1
hour.

26. Zonbu
Computer

27. The Asus Eee PC and other ultra portables
The "ultra-portable" class of
personal computers is
characterized by a small size, fairly
low power CPU, compact screen,
low cost and innovations such as
using flash memory for storage
rather than hard drives with
spinning plotters.
These factors combine to enable
them to run more efficiently and
use less power than a standard
form factor laptop. The Asus Eee
PC is one example of an
ultraportable.

28. EXAMPLES
• The IBM ThinkPad X40, Sony VAIO
PCG-TR3A, HP Compaq NC4010
and the Gateway M200X
are examples of ultraportable
laptop computers.

29. ADVANTAGES
Energy Saving
Environment Friendly
Less pollution
Less greenhouse gas emissions

30. Limitations
Green Computing could be quite costly.
Some computers that are green may be considerably underpowered.
Rapid technology change.

31. Conclusion
Consumers haven't
cared about
ecological impact
when buying
computers, they've
cared only about
speed and price.
But as Moore's
Law marches on
and computers
commoditize,
consumers will
become pickier
about being green.
Devices use less
and less power
while renewable
energy gets more
and more portable
and effective.
New green
materials are
developed every
year, and many
toxic ones are
already being
replaced by them.

32. REFERENCES
Kayathri, Mrs S., Mrs S. Girija, and Ms S. Meena. "Green
Computing to Reduce the Harmful Impact of Technology
on the Earth." International Journal of Applied
Engineering Research 13, no. 11 (2018): 9965-9968.
Jindal, Gaurav, and Manisha Gupta. "Green computing
“future of computers”." International Journal of Emerging
Research in Management &Technology (2012): 14-18.
Raza, Khalid, V. K. Patle, and Sandeep Arya. "A review on
green computing for eco-friendly and sustainable
it." Journal of Computational Intelligence and Electronic
Systems 1, no. 1 (2012): 3-16.

33. "GO GREEN AND
SAVE OUR EARTH"