This document discusses green computing and how to reduce the environmental impact of computing. It describes how green computing aims to efficiently use computing resources and design, manufacture, and dispose of computers with minimal environmental impact by reducing hazardous materials and maximizing energy efficiency. Specific green approaches discussed include using more sustainable materials like bamboo in manufacturing, implementing power management features to reduce energy usage, and properly disposing of e-waste to avoid toxic chemicals polluting the land. The overall goal of green computing is to lessen computing's carbon footprint and make the industry more environmentally friendly.

1. Green Computing
( For a cleaner World )
Presenting By
Swarna Bhargava,
MCA V sem.

2. What is Green Computing???
 Green computing is the practice of using
computing resources efficiently.
 Designing , manufacturing and disposing
Computer, servers with no impact on the
environment.
 To reduce the use of Hazardous materials,
maximize energy efficiency during product’s
lifetime.

3. Need of Green Computing
 Computer energy is often wasteful
Leaving the computer on when not in use
 Printing is often wasteful
How many of you print out your emails or meeting
agendas .
 Pollution
Due to manufacturing, packaging, disposal
techniques.
 Toxicity
Due to toxic chemicals involved in the
manufacturing

4. Approaching Areas
 Product Longevity
 Data center design
 Software & Development optimization
 Power management

5. Manufacturing of PC’s
 Lead: used in soldering of printed circuit boards
lead can cause damage to the central and
peripheral nervous system , blood systems
and kidneys.
 Mercury: used in batteries, switches . Mercury spreads
out in water transforming into methylated
mercury that can cause chronic brain damage.
 Cadmium: used in resistors for chips and in
semiconductors . Cadmium is classified as toxic,
these compounds accumulate in the human body,
particularly the kidneys.

6. Green manufacturing
 Bamboo : is becoming increasingly popular for making
casings for computers and peripherals.
 Recyclable plastics : computers are constructed from non-recyclable
plastics ie 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.

8.  CPU uses 120 Watts
 CRT uses 150 Watts
8 hours of usage, 5 days a week =
562 KWatts
 Energy use comes from
Electrical current to run the
CPU, motherboard, memory
running the fan and spinning
the disk.
monitor

9.  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

10. How to save energy while
working on the computer??
Sleep mode:
 Sleep or standby mode conserves energy by cutting off power to
your display, hard drives and peripherals.
 After a pre-set period of inactivity, your computer switches to a
low power state.
Hibernate mode :
 Saves energy and protects your work by copying system data to a
reserved area on your hard drive and then completely turning off
your computer.
 Reduces wear and tear on your components.

11.  Europe has outlawed using landfills for computer 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.