INTRODUCTION TO COMPUTER SYSTEM - Chapter 7

1. GREEN
COMPUTING
GREEN
COMPUTING
By
Liliana Serina

2. Contents
• Introduction
• Goals Of Green Computing
• Regulation And Industry Initiatives
• Approaches To Green Computing
• Advantages
• Disadvantages

3. Introduction
• Green computing is the study and
practice of using computing resources
efficiently.
• It is the environmentally responsible and
eco-friendly use of computers and their
resources.
• Green computing is also known as green
information technology (green IT).

4. • Green Use
• Green Disposal
• Green Design
• Green Manufacturing

5. Goals Of GC
• reduce the use of hazardous materials,
• maximize energy efficiency during the
product's lifetime,
• promote the recyclability or
biodegradability of defunct products and
factory waste.
• to cut down to as little as possible the
amount of energy used.

6. …Goals Of GC
• to minimize the inclusion of harmful
materials.
• to use as many biodegradable materials
as possible.
• to extend as far as possible the life of the
equipment.

7. Initiatives for GC
Energy Star program :
• an international standard for energy efficient
consumer products.
• Created by USA; adopted by Australia, Canada,
Japan, New Zealand, Taiwan and the European
• Devices carrying the Energy Star mark: use 20–30%
less energy than required by federal standards.
• Sample of Energy Star items:
Computers, Server, Home electronics
Heating and cooling systems,
Imaging equipment

8. Approaches To GC
1. Product longevity.
2. Software and deployment optimization.
3. Power management.
4. Materials recycling.
5. Telecommuting.

9. Approaches To GC
1. Product longevity.
 The longer a product is in use, the fewer the
numbers of that particular product that need to
be created as well as disposed of.
 E-waste is a term used to cover almost all types of
electrical and electronic equipment (EEE) that has
or could enter the waste stream.
 A well made product would last longer
than a less durable one that needs to
be replaced sooner.

10. Approaches To GC
2. Software and deployment optimization.
 an efficiency way for saving energy include:
a) Algorithmic efficiency: running a program efficiently and
effectively via a subtle power control on each computing
resources.
eg: Windows 7 + Office 2010 require 70x more memory (RAM) than
Windows 98 + Office 2000 to write exactly the same text
b) Resource allocation: scheduling of activities and the resources
required by considering both the resource availability and the
project time.
c) Virtualization: combine several physical systems into virtual
machines on one single, powerful system.
d) Terminal servers: all of the actual computing is done on the server,
but the end user experiences the operating system on the terminal.

11. Approaches To GC
3. Power management.
 allows an operating system to directly control the power
saving aspects of its underlying hardware
 allows a system to automatically turn off components
such as monitors and hard drives after set periods of
inactivity
 Involving:
a) Operating System Support: encouraging users to save power
b) Power supply: must be at least 80% efficient
c) Storage: Smaller physically drives, less power usage
d) Video card: more powerful, more energy usage
e) Display: LED is better than LCD and CRT

12. Approaches To GC
4. Materials recycling.
 Computer systems that have outlived their
particular function can be repurposed, or donated
to various charities and non-profit organizations.
 Recycling computing equipment can keep harmful
materials such as lead, mercury, and hexavalent
chromium out of landfills.

13. Approaches To GC
5. Telecommuting.
 The advantages are many;
a) increased worker satisfaction,
b)reduction of greenhouse gas emissions related
to travel,
c) increased profit margins as a result of lower
overhead costs for office space, heat, lighting,
etc.

14. Advantages
• Both green computing and
hardware disposal focus on being
green to help have less of an impact
on our enviroment.
• Recycling like NewTech
disassembles and reuses parts from
old computers to build new, better
ones, without just dumping them in
a landfill.

16. BE ECO FRIENDLY