CSC 100 Lecture Notes - Lecture 4: Open Data, Tim Berners-Lee, Hypermedia

• School: University of Victoria
• Department: Computer Science
• Course: CSC 100
• Professor: Cheng Mantis

Document Summary

More tha(cid:374) (cid:1010)(cid:1004)% of the (cid:449)orld"s populatio(cid:374) ha(cid:448)e a(cid:272)(cid:272)ess to (cid:449)orld"s populatio(cid:374). Over 25% have high speed access to the internet. There are over 1 billion users using social network. The world wide web is just over 20 years ago; it was created in 1995. The internet and the www are becoming a part of our culture; they are not the same thi(cid:374)g e(cid:448)e(cid:374) though (cid:373)ost people (cid:272)a(cid:374)"t tell the(cid:373) apart. Internet is much older and have way more information than www. Alexander graham bell invented the telephone in 1876, and later founded at & t. At & t (cid:449)as o(cid:374)(cid:272)e the (cid:449)orld"s largest (cid:272)o(cid:373)pa(cid:374)y. Early telephone connections were made manually, via operators. In 1920, it has over 2 million subscribers. Pstn is a global network of regional wired telephone networks. Its primary service is to provide a global network for telephones. Pstn is used for voice communication only.