Green computing involves the environmentally sustainable and efficient use of computing resources. It includes designing and manufacturing computers with non-toxic, recyclable materials and maximizing energy efficiency during use and disposal. Adopting practices like turning off computers when not in use, using power saving modes, recycling electronics, and replacing toxic components can help reduce pollution and waste while still enabling computing. The overall goal of green computing is to reduce the environmental impact of computing through its entire lifecycle from creation to disposal.

1. Green
Computing
Presented by
Sangeetha.I
Madhusudhanan.A

2. What is GREEN COMPUTING?
 Green Computing is the practice of using computer resources
efficiently.
 Designing, manufacturing, disposing computers, servers with no
impact on the environment.
 To reduce the use of hazardous materials, thus maximizing energy
efficiency during product’s lifetime.
 Also known as Green IT.

3. Why GREEN COMPUTING?
 Computer Energy is often wasteful.
Eg: Leaving the Computer ON when not in use.
 Printing is wasteful.
Eg: Email / Meeting agenda’s print-outs is a waste.
 Pollution.
Eg: Due to manufacturing, packaging, disposal techniques.
 Toxicity.
Eg: Due to toxic chemicals involved in manufacturing.

4. Process of Green Computing

5. Green Manufacturing
 Bamboo: is becoming increasingly popular for making casings for
computers & peripherals.
 Recyclable plastics: Computers are constructed from recyclable
polycarbonate resin.
 Eco-friendly flame retardant: There are flame retardant silicone
compounds available that are flame retardant and completely non-toxic.
 Inventory Management: reducing the quantity of both hazardous
materials used in the process and the amount of excess raw
materials.
 Volume reduction: removes hazardous portion of waste from
non-hazardous portion.

6. Reducing Energy Consumption
 Turn off the computer when not in use, even if just for an hour.
 Turn off the monitor when not in use.
 Use power saver mode.
 Use hardware/software with the Energy Star label.
 Don’t print unless necessary and you are ready.
 Use LCDs instead of CRTs as they are more power efficient.

7. Energy Star
 One of the first manifestations of the Green Computing movement was
the launch of ‘Energy Star’ program back in 1992.
 Energy Star served as a voluntary label awarded to computing products
that succeeded in minimizing use of energy while maximizing the
efficiency.
 Energy Star applied to products like Monitors, television sets and
temperature control devices like refrigerators, air-conditioners.

8. Saving Energy while working in
Computer:
Sleep Mode:
• Sleep or Stand-by mode conserves
energy by cutting off power to our
display, hard drives and peripherals.
• After a preset period of inactivity, our
computer switches to a low power state.
Hibernate Mode:
• Saves energy and protects our work by
copying system data to a reserved area
on our hard drive and then completely
turning off computer.

9. Saving Energy while working in
Internet:
• ‘Blackle’ is a website powered by Google custom search and created by
‘Heap Media’ which aims to save energy by displaying a black
background and using grayish-white font color for search results.
• ‘Blackle’ saves energy because the screen is predominantly black.
• Setting ‘Blackle’ as the default search engine will definitely take us to
Green computing.

10. Thin Client:
• A Thin Client is a computer or a computer program which depends heavily
on some other computer (its server) to fulfill its traditional computational
roles.
• a regular computer
• do not have to have hard drives
• can run the software, with the help of a server
• connected to servers through network

11. Disposal of components
• Disposal of these devices constituted 20-50 million tons per year
(about 5% of the total waste of the planet)
this waste is called e-waste
• Toxic chemicals in electronics products can reach into the land over
time or are released into the atmosphere, impacting nearby
communities and the environment.
• This releases heavy metals such as lead, cadmium and mercury into
the air and ashes.

12. Green Disposal:
• Reuse: donate your computer
components to people who don’t have or
have lesser quality computers.
• Refurbish: rather than discarding your
computer upgrade it. Change its parts to
make it new.
• Recycle: One of the major challenges is
recycling the printed circuit boards from
electronic wastes. The circuit board
contains such precious metals as gold,
silver, platinum etc.

13. Conclusion
 While the performance and the breadth of application is increasing,
so awareness of the cost & scarcity of the energy required to power
them, as well as the materials needed to make them is necessary.
 Through more environmentally aware usage(such as more effective
power management & shut-down during periods of inactivity) and
by adopting current lower power technologies, computers can be
made significantly more energy efficient.
 Green Computing = Green Earth.