GREEN COMPUTING FOR RE_USE

1. GREEN COMPUTING
Submitted by :-

2.  Is the environmentally responsible use
of computers and related resources
Green computing
Why is Green Computing required?
 Computer consumes a lot of energy.
 Printing often unnecessary stuff is
waste.
 Reduce pollution.
 Toxicity.

3. HISTORY
 It originated in 1992 at the U.S Environmental
Protection Agency that launched Energy Star program.
 Shortly after that the term “Green Computing “ was
coined.
 Shortly after that the Swedish also launched the TCO
Certification.
 Use hardware/software with the Energy Star
label
 Energy Star is a “seal of approval” by the
Energy Star organization of the government
(the EPA)

4. ENERGY CONSUMPTION
 CPU uses 120 Watts.
 CRT uses 150 Watts.
 Energy use comes from
 electrical current to run the CPU, motherboard,
memory
 running the fan and spinning the disk(s)
 monitor (CRTs consume more power than any other
computer component)
 Printers
 for a large institution, say a university of 40,000
students and faculty, the power bill for just
computers can come to $2 million / year

5. THREE APPROACHES TO GREEN COMPUTING
 Power management is built into PC operating
systems, but users have additional choices, such as
whether to Turn off computers when not in use.
 E-mail can take the place of more costly practices,
such as when users distribute print documents as
e-mail file attachments rather than as paper copies.
 Online learning using learning management
systems and web/videoconferencing can reduce the
need for traditional classrooms and other
infrastructure while decreasing travel costs and
CO2 emissions.

6. HOW TO REDUCE THE ENERGY CONSUMPTION?
 Turn off the computer when not in use.
 Turn off the monitor when not in use.
(as opposed to running a screen saver)
 Use power saver mode.
(Standby,Hibernate,Power plan modes)
 Use LCDs instead of CRTs as they are more power
efficient.
 Use hardware/software with the Energy Star label.
 Don’t print unless required.
 Choose Intel & VIA Processors in comparison to
AMD Processors.

7. HOW TO SAVE POWER ON YOUR COMPUTER
Turn off your monitor :
 Our computer’s monitor uses a large portion of the energy consumed by
your computer. A good way to save some energy is to turn off your
monitor when you are not using it.
Avoid using screen savers :
 When trying to reduce the amount of energy used by your monitor,
screen savers are not an effective way to go. They do nothing to decrease
the amount of energy used by your monitor; they actually use your
monitor at full capacity. Remember, they’re screen savers, not energy
savers. The best option is to turn off your monitor.
Turn down your Monitor brightness :
 As mentioned above, your monitor uses a lot of energy. To reduce this
slightly, you can turn down your monitor's brightness level. The brighter
your screen is, the more energy your monitor uses.

8. E-MAIL
Environment friendly:
Postal mails use paper as a medium to send letters.
Electronic mail therefore, prevents a large number of trees
from getting axed. It also saves the fuel needed for
transportation.
Informal and conversational:
The language used in e-mails is generally simple and thus,
makes the process of communication informal. Sending and
receiving e-mails takes less time, so it can be used as a tool for
interaction.
Easy to use:
E-mail frees us from the tedious task of managing data for
daily use. It helps us manage our contacts, send mails quickly,
maintain our mail history, store the required information, etc.

9. POLLUTION
 manufacturing techniques
 Packaging
 disposal of computers and
components

10. TOXICITY
 LEAD :
 It is estimated that between 1997 and 2004,
1.2 billion tons of lead was used in computer
 The problem :
 cause damage to the central and peripheral nervous
systems, blood system, kidneys and cause negative
effects on child brain development
 lead accumulates in the environment and has toxic
effects on plants and animals .
components

11. MERCURY
 Mercury is used in
 batteries, switches and printed circuit boards
 The problem
 mercury spreads out in water transforming into
methylated mercury which easily accumulates in
living organisms
 it enters the food chain through fish that swim in
polluted waters
 methylated mercury can cause chronic brain damage

12. LAND FILLS
 Europe has outlawed using landfills for
computer
components
 the US and Europe export a lot of e-waste to
Asian landfills

13. RE-CYCLE USE
 Reuse: donate your computer components to
people who may not have or have lesser quality
computers.
 Refurbish: rather than discarding your computer
when the next generation is released, just get a new
CPU and memory chips – upgrade rather than
replace.
 If companies can recycle the plastics and
other components, this can greatly reduce
waste and toxins.

14. “SMALL CHANGES CAN ADD UP TO BIG ENERGY SAVINGS IN TIME”
“Let's join our hands to get a Green computing and Green environment.”