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Health and Green IT
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Health and Green IT
Breaks
Ensure the well-being of a user while using a computer or device
Good posture
Well-being
computers are used by millions of people everyday around the world.
the most common ailments related to computer usage area are vision defects and wrist injuries.
Ergonomics is the study of workplace design and the physical and psychological impact it has on users and employees.
the well being of computer users can directly be related to productivity and to injuries or disorders. to avoid injures and increase productivity, some sample guidelines can be followed
Lighting
Taking regular breaks
is important. Stand and move away from your workstation to refresh yourself.
when you work at your computer for long periods , take short breaks at least once per hour and preferably more often.
Avoid eye strain by resting and refocusing your eyes periodically
Breaks
Good Posture
Good posture is essential for all computer users
you should adopt a natural and relaxed position.
Poor posture increases the static loading on a large number of muscles tend to become shorter and denser , reducing blood circulation in the arms , neck and shoulders
Avoid awkward postures at the extremes of the joints range , especially the wrists
Good posture is the best way to avoid a computer related injury
Lighting
the base of the light should be large enough to allow a variety of convenient positions or extensions
Make sure the lighting isn't too bright
if you see glare on your screen then move the screen, window or is backed to a bright window
Extreme light and temperature may result in the user adopting bad body posture when using the computer
Avoiding Danger when working with computers
Avoid Danger when working with computers
- Do not overload the power sockets
- replace damaged or exposed power cables and plugs
- Computers have power cables which needs to be plugged in , Do not place cables where people are likely to trip over them
- Do not extend cables too far
- be careful when lifting heavy computer equipment
- use a surge protection device to protect your computer from sudden jolts of electricity which damage circuitry or hard drives
Golden Rules when working with computers
Golden Rules when working with computers
- Use a mouse pad it ensures a reasonably clean (if cleaned regularly)
- keep the workspace clean and tidy
- clean computer components on a regular basis
- Avoid spilling drinks or dropping food on any component
- Do not unplug the computer while it is turned on
- Do not open the computer case and touch the components
- Do not plug a component or a cable in a port just because it fits there
- Do not let the computer share an electrical socket with another large electrical appliance such as a fridge
Computer and device energy saving practices
practicing green computing is an important part of reducing your environmental impact.
Green computing is using computer resources more efficiently and aimed at helping the environment and saving energy
the table below is an indication of the power consumption of computer equipment
Computer and Device energy saving practices
Turning off
Turn your computer or device off when not in use. this is the single most important thing you can do to reduce energy consumption. Much of the energy use associated with computers is wasted because computers are often left on when not in use , including nights , weekends and extended periods of inactivity during the day.
the extra power consumed at start-up will not exceed the power used by keeping the computer on all the time
Turning your computer on and off will have no significant effect on it operation or life
Turning Off
Automatic shutdown
set up your computer to shut down automatically at a specific time when you are not there to perform the shutdown yourself . this will prevent the computer being on for unnecessary long periods
Automatic Shutdown
Continue
Back Light
a back light is a form of illumination used in LCDs , as LCDs do not produce light themselves they need illumination (ambient light or special light source) to produce a visible image. back lights illuminate the LCD from the side or back of the display panel. back lights are used in small display to increase readability
Backlight
Sleep mode setting
Many electronic devices continue to use power even when they are not being used. Devices such as printers , scanners and modems often use power in "Standby mode" that means these devices continue to use electricity to power lights , clocks and "instant-on" features even when they are not in use
Sleep Mode setting
Standby / Sleep
Standby/Sleep
Means the computer still uses power but at a reduced level.
non-essential components are powered down.
putting your computer into the sleep state is like pausing a DVD player
the computer computer can "awake"faster than from hibernate mode but uses some minimal power to enable it
Hibernation
Hibernate
is a power-saving state designed primarily for laptops. Hibernate means the computer saves it state, and then turns itself off. it will reload its state when you turn it on again.
Hibernate powers up faster than a regular boot.
the computer uses no power during hibernation
To change sleep mode setting
Change sleep mode settings
E-Trash or E-Waste
E-trash or E-waste is discarded electronic parts or components , whether they are broken or merely out-dated.
it is sometimes cheaper to buy a new electronic device such as a cell phone or computer than repair
as result an enormous number of computer and electronic devices are trashed.
These devices contain toxic materials such as lead , cadmium and mercury which can contaminate the environment
E-Trash
E-Waste
How to stop or Limit E-waste
- Recycle a cell phone
- Download software
- Print less
- Purchase recycled or recyclable products
How to stop or Limit E-waste
Accessibility Enhancement options
there are various types of applications that helps users to copy with the difficulties of operating a computer or just make it easier to use a computer
Accessibility Enhancement options
Voice recognition software
Voice or speech recognition is the ability of an application to receive and interpret spoken word, or carry out spoken commands
Voice Recognition software
Screen Reader software
A screen reader is software application that attempts to read text from the screen and converts it to spoken word/voice , sound icons or Braille
Screen readers are a form of assertive technology , potentially useful to people who are blind, visually impaired or learning disabled
Screen Reader software
Screen Magnifier
A screen magnifier is software that enlarges screen content. it is Assistive technology suitable for visually impaired people who still have some functional vision
Screen Magnifier
On-Screen Keyboard
The on-screen keyboard is a software application which provides a visual keyboard on the screen that can be used in place of an actual keyboard
the on screen keyboard can be manipulated by the mouse or other pointing device
On-Screen Keyboard
High Contrast
High Contrast improves readability of the display by applying a special system color scheme. high contrast heightens the color contrast of some text and images on your computer screen , making those items more distinct and easier to identify