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12 - Environment
ITGS Key Terms
| Term | Definition |
|---|---|
| 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. |
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nlikitha99
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