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61 terms

ITGS Chapter 11 - Environment

Key terms for the ITGS specific scenario 'Environment'. These relate to chapter 11 of the textbook (www.itgstextbook.com).
STUDY
PLAY
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.