Media, Information and Technoculture 2500A/B Lecture : networks lecture-nov 16.docx

• School: Western University
• Department: Media, Information and Technoculture
• Course: Media, Information and Technoculture 2500A/B
• Professor: John Reed

Document Summary

We can be together but also be geographically dispersed. Being there in a virtual sense vs. being there live. Not together in space or time (johns virtual lectures) Network technology: decentralization and the formation of arpanet (gov"t military approach to the beginnings of decentralized and distributed network communications) 1957: first communication satellite: first communication satellite released into space. Licklider: in 1962 he proposed something called packet switching, which is when a message leaves a computer,it breaks up and floats off into the network and all the pieces re identity themselves at the receiving computer. Many different nodes in the networks and the message is working its way through the network. Messages are distributed into packets and then the message is reassembled. 1967: move from centralized to distributed communications network. Television or radio tower is centralized but arpanet is decentralized- not yet distributed, it is a series of centralized nodes. Nodes are opened up and stored and copied.