Linking the world
The Internet
In the late 1870s, the fastest way to get a message to any country is by telegram. By a cable It takes a day to get to its destination. It costs 15 shillings a word to send, that is $100 in 2010 to 2015 money. Nowadays, for a fraction of a cent to send an email to the other side of the planet. When we search on the internet or talk on stuff like Skype. So that means we are making use of power. To link the internet you need servers. When somebody inside the organisation emails a workmate, the company’s mail servers directs that email to the right person. If an email is sent to somebody in a different organisation, the servers of the two organisation communicate with each other to ensure that the message gets to where it should go. Large internet companies have many servers clustered together in one big building called data centre or server installation. Data centres contain powerful computers and process millions of data requests every second.