Understanding Developing technology

Analogue:
Analogue is the broadcasting of encoded audio signals, transmitting sound waves, and video waves showing what colours have to be used, and the brightness of the colour. 
The earliest analogue televisions originally used spinning disks with holes imprinted in to scan an image, with another disk to then recreate the image on the television, but since the creation of the Cathode-Ray tube, that spreads or 'writes' the image faster and more efficient than the disk method. Whereas recently more and more people are moving from analogue to mediums such as digital and satellite, with Sky being one of the most popular in the UK. 

On-Demand:
On demand having only recently become popular down to the releases of several on demand internet resources, some of these being ITV player, BBC iPlayer, and 4oD. In 1994 in England a VOD service formed a major part of the Cambridge digital Interactive Television trial- Now known as Virgin Media. These on demand services having recently been promoted by several other platforms such as Xbox and playstation have become one of the most popular forms of viewing media. These services can also be used online to view programmes you may have missed, there footage on the demand services are deleted after several weeks to make more room for new programmes to get uploaded onto the site. By 2006 there were 142 VOD services available in europe, and by 2009 this number had increased to approximately 650, that was mostly down to the increasing popularity of television shows and party because of the lack of time people have throughout weekdays to watch certain shows. 

Internet:
The internet has developed over the years from having to use services such as AOL to BT infinity ever since the creation of computers in the 1950's. Several causes for the development of the internet are due to the companies that use it as a medium, for example the company Youtube work entirely over the internet, and other sites such as ebay and amazon for example. The use of the internet has also developed along with itself from being restricted to only using it from computers to now using wifi and 3G to access the internet on mobile devices. Using the internet has also been a popular medium for film and television production studios to sell productions not just to computers and other mobile devices but also on gaming consoles that have begun to partner up with these companies to further push sales and audiences. 

Pay Per View:
Pay per view is where something on television will be broadcasted for a set price and to watch this you would have to buy the channel, the programme is then broadcasted at a set time where you would have to tune in to watch the channel. An example of this would be watching sky box office and buying a film to view that would begin at the same time as everybody else watching it. People in the UK can access pay per view services via cable, satellite and over the internet, with sports covering most of the available programmes as of 2009.