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12 - Environment

ITGS Key Terms

TermDefinition
ADC Device for sampling analog data and producing a digital sample of it.
analog data Continuous data which can be measured, such as the temperature in the room.
analog to digital converter Device for sampling analog data and producing a digital sample of it.
BAN Environmental campaign group that works to reduce the problems caused by e-waste.
Basel Action Network Environmental campaign group that works to reduce the problems caused by e-waste.
Basel Convention, The Environmental agreement regarding e-waste.
blade servers Server design which is modular, allowing systems to be rapidly expanded and reducing power consumption.
continuous data Analog data which can be measured, such as the temperature in the room.
CRT Old, large TV style computer monitors.
data centres Large warehouses of computers that host hundreds or thousands of gigabytes of data.
data layers Layers of information added to a Geographical Information System.
data logging Automatic recording of data using sensors.
digital data Discrete data which can be counted.
digital footprint An individual's effect on the environment due to e-waste.
digital divide The idea that money, language, education, or infrastructure creates a gap between those who have access to information technologies and those who do not.
digitisation The process of converting analog data into digital computer data.
discrete data Discrete data which can be counted.
donation schemes Schemes used to find additional uses for obsolete computer equipment to extend it's useful life.
e-waste Discarded electronic equipment that is either broken or obsolete.
electronic waste Discarded electronic equipment that is either broken or obsolete.
Geographical Information System A system which allows layers of data to be placed on map data to visualise and analyse it. For example, crime rate figures can be layered on a map of a city.
geotagged Adding tags to data (such as an image) to identify the location in which it was created.
GIS A system which allows layers of data to be placed on map data to visualise and analyse it. For example, crime rate figures can be layered on a map of a city.
Global Positioning System System of satellites that allows a user to determine their position on Earth using a special receiver.
GPS System of satellites that allows a user to determine their position on Earth using a special receiver.
GPS receiver Part of the GPS system which calculates its distance from satellites in space.
laser imaging Remote imaging method that users laser light, often used by satellites.
LCD Newer style "flat screen" monitors.
LEDC Countries to which electronic waste is often shipped for unsafe recycling and disposal.
Less Economically Developed Country Countries to which electronic waste is often shipped for unsafe recycling and disposal.
Lidar Remote imaging method that users laser light, often used by satellites.
life cycle (hardware) For computer hardware, the period of time from its manufacture, through its use, until its eventual disposal.
location based service Any service (e.g. web page content) which varies according to the user's location.
MEDC Countries which are often a significant source of electronic waste.
More Economically Developed Country Countries which are often a significant source of electronic waste.
planned obsolescence Idea that IT equipment is designed to have a short life expectancy before failing or becoming obsolete.
power settings Operating systems to affect the power consumption of a computer.
radar Remote imaging method used by satellites.
recycling The process of reclaiming valuable elements from waste electronic equipment, often done unsafely in developing countries.
reduce The 'R' concerned with preventing e-waste problems by producing less waste equipment and using fewer harmful chemicals.
redundant systems System which will take over the role of a primary system if it fails.
remote sensing Techniques used by satellites to image the Earth.
refurbish The 'R' concerned with finding additional uses for equipment which is obsolete but not broken.
reuse The 'R' concerned with finding additional uses for equipment which is obsolete but not broken.
RoHS A law which limits the harmful chemicals that manufacturers are allowed to put into their electronic equipment.
Reduction of Harmful Substances A law which limits the harmful chemicals that manufacturers are allowed to put into their electronic equipment.
sample precision During digitisation, the number of bits used to represent each sample.
sample rate During digitisation, the number of samples taken per second.
sampling The process of converting analog data into digital computer data.
sat nav Portable GPS receiver device often used in vehicles.
satellite imaging The use of sensors on satellites to measure or record information, usually about the Earth.
satellite navigation system Portable device that uses GPS to plot the user's position.
sensors Input devices used to measure physical traits, such as sound, heat, or light.
sonar Remote imaging method used by satellites.
speed throttling Reducing a processor's clock speed to save power when not in use.
take-back scheme Scheme operated by IT manufacturers to accept customers' old hardware for recycling at its end of life.
virtual globe A 3D software map of the Earth, usually with layers of information added, similar to a GIS.
virtual machines A software implementation of a computer system, allowing one physical computer to run several "virtual computers", each with their own independent operating system and application software.
virtualisation The process of using several virtual machines running on one computer to replace several separate physical computers.
visualisation Producing graphs or animations based on computer data, to help understand and analyse it.
WEEE A European law which requires electronic equipment manufacturers to accept back their equipment for recycling at its end of life.
Created by: nlikitha99
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