3.1+-+3.12+IT+Systems




 * AI:** Artificial Intelligence. Computer systems able to perform tasks that normally require human intelligence, such as visual perception, speech recognition, decision-making, and translation between languages.


 * Bar code:** Used to identify a product when a red light shines and reflects on a black and white bar code. Several validation routines are performed each time: watch here for a lesson on bar codes


 * Biometrics**: Biometrics is when technology is used to measure or analyse some part of the human body such as retina, fingerprint or DNA to validate a persons identity.


 * CAPTCHA**: []


 * Centralized database**: A database where all data is stored in one location and connected to one CPU. picture of structure


 * Chip and PIN**: A system used to prevent fraud in smart-cards.


 * CODEC**: Video compression technique usually used in video conferences.


 * Data Migration**: This is when data is transfered from an old legacy system to the new system database.


 * Distributed Database:** Where the databases are not all attached to the same CPU. picture of structure


 * DHCP:** Short for // ** D **ynamic ** H **ost ** C **onfiguration ** P **rotocol, // a [|protocol] for assigning [|dynamic] [|IP addresses] to devices on a [|network].


 * Echo Cancellation Software**: Used in video conferences to enable better quality of sound.


 * EFTPOS**: Electronic fund transfer at point of sale. like EPS but used in Australia and New Zealand.

[|More Encryption Info.]
 * Encryption:** Used to encrypt and decrypt information that is stored or sent ove the internet. You need a key to decipher the text.


 * FTP:** File Transfer Protocol: is a protocol (standard) used to transfer files from one host to another host over a TCP (transmission control protocal)-based network, such as the Internet.


 * Gantt Charts:** Useful tools for planning and organizing large software projects. More about gantt charts We practiced using Tom's Planner


 * GPS:**Global Positioning System. Using Satelites to get your exact location on Earth. [| http://www8.garmin.com/aboutGPS/] or watch a video describing GPS here


 * HTTPS:** Hypertext Transfer Protocol Secure, a safer way to conduct transactions on the web Wan Ling's Presentation


 * INS:** Inertial Navigation System. Navigation aid that uses a computer, motion sensors and rotation sensors. It calculates the position, orientation and velocity of a moving object without the need for external references (Data from other components). [|Click here to learn more about the INS]


 * IP Addresses**: Internet Protocol Address. Static and dynamic IP address Click here for an explanation


 * Javascript:** A programming language used to create interactive webpage See Conan's presentation


 * Legacy System**: Is an old computer system that is still in use.

**Lidar**: Laser/Light Detection And Ranging. A system used to produce high resolution, accurate and topographical maps. Click here for an explanation

 * MICR:** Magnetic Ink Character Recognition: Used in cheques, the numbers along the bottom, branch/account num click for more


 * NFC:** Near Field Communication, used for electronic payment, such as google wallet and octopus cards.


 * Normalization**: When data redundancy has been removed from a relational database.


 * OCR**: Optical Character Recognition. Computers reading text/writing and converting it into digital form.


 * PHP**: Hypertext Preprocessor, programming language to create interactive web pages. See Conan's presentation


 * POS:** Point of Sale


 * Position Estimator**: Position Estimator measures small movements of the car, and locates the position of the car accurately on the map. []


 * Pert Charts:** (Program Evaluation and Review Technique) used to calculate the critical path of a project. Uses a formulae to calculate a realistic time that it will take to complete each ask and thus the whole project. More info + the formulae here


 * RAID:** Redundant Array of Inexpensive Disks: You can use RAID 0 or RAID 1 for backing up data. Wei Kang's explanation


 * Relational Database**: Is a database that contains 2 or more tables that are linked through relationships. Read more here


 * SSL:** Secure sockets layer, uses a public and private key for security Wan Ling's presentation


 * TCP/IP:** (Transmission Control Protocol/Internet Protocol) is a protocol that allows infromation to be sent around the internet How the internet works - video


 * Telecommuting**: working from home by using IT hardware and software: Advantages v Disadvantages


 * Turing Test**: A test for human v computer. [] []


 * Validation Checks**: Put into a computer system to ensure that the data being entered is correct. There are many types of checks that can be carried out. Read here for more


 * Verification**: This done to ensure that the data entered is correct. Like double entry of your password. [|Read here for more]


 * Voice Recognition**: Voice recognition is the process of converting speech into text format. [|Click here for an article.]


 * VoIP**: Voice over internet protocol. A protocol used when data is transfered during a video chat


 * VPN**: Virtual Private Network [|Click here for explanation and diagram] We studied VPN's in this page.


 * W3C** **Geolocation**: Browser Geolocation, locating where you are through IP address, Wifi, Cell Towers & GPS. [|Click here for details]