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8.1.4 Reasons for digital representation of data
|Students learn about:||Students learn to:|
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This page contains useful information regarding reasons for digital representation of data. Terms can be viewed to the right of the page and its definitions(containing, text, pictures and videos) on the right. The Year 11 course specifications can be viewed at the top of the page.
|the need for quality data|
| || Accuracy is a major issue for digital representation of data, due to the options of transmitting and receiving data.|
Mediums like the Internet that offer rapid sharing of digital data cause added requirements of team members such as moderators to ensure data accuracy.
| ||With new and emerging technologies the ability for data to be constantly uploaded and updated has given the ability for data to be continually up to date, and accessed when it is required.|
| ||Part of the purpose of digital representation of data is to allow the users of the system the ability to access the data when they need it, accessibility involves ensuring that the user has access to the data when they require it, for example displaying data on the Internet allows world wide access of data for all its users.|
|current data digitising trends|
| || In Internet newspapers allow readers access news articles as viewed in a newspaper, on their computer. this technology gives newspaper publishers the ability to add extra features to their articles such as videos, extra videos etc.|
Research has found that although Internet news seems far superior to printed news, that Internet news has complimented printed newspapers and in fact increased sales through using the Internet as a marketing tool.
| || Wikipedia - Digital Telephone|
"Digital telephony is the use of digital electronics in the provision of digital telephone services and systems. Since the 1960s a digital core network has almost entirely replaced the old analog system, and much of the access network has also been digitized. Digital telephony was introduced to provide voice services at lower cost, but was then found to be of great value to new network services such as ISDN that could use digital facilities to transfer data speedily over telephone lines." - http://en.wikipedia.org/wiki/Digital_telephony
| || Wikipedia - DVD|
"Digital Versatile Disc" or "Digital Video Disc"
"An optical disc storage media format. Its main uses are video and data storage. DVDs are of the same dimensions as compact discs (CDs), but store more than six times as much data." - http://en.wikipedia.org/wiki/DVD
| || The concept of facsimile is simply a device that can send exact copies of a page with text and images to another machine the be printed.|
Modern day printers such as the Canon D620 combine the features of Fax, Printing and scanning. This technology uses digital transmission techniques far advancements from the original fax machine that used analogue signals to transmit over distances.
| || Media retrieval management systems integrate all of an institution's different media into a centralised system.|
Media retrieval systems can come in forms to cater for Digital, analogue and digital/analogue media.
Wikipedia - Digital Asset Management
|explain why information technology uses digital data||Digital data is becoming the emerging trend for Information Technology, this is due to the advantages it holds over the alternate ageing analogue methods|
|describe advantages for the digital representation of data|| Digital Data has several advantage over analog data, this is why the trend is becoming to switch from analog to digital data. These include:|
|describe disadvantages for the digital representation of data|| From a transmitting and receiving sense, data represented in digital form has the disadvantages of:|
Revision Quiz - 8.1.4 Reasons for digital representation of data
YouTube - Analogue vs Digital, sound recording
Latest page update: made by mfridolfsson
, Sep 9 2009, 1:37 PM EDT
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