Exam 3 wk 13/14 Lecture Flashcards
what was the first television technology? how did it work?
mechanical television, patented a spinning disk (Nipkow), electromecanical system using the Nipkow system (Baird)
who was awarded the key patent for the first electronic TV system
Farnsworth, developed first ALL electronic TV system, camera and receiver, awarded patent over Zworykik
What is there such a debate surrounding who invented TV
Zworykin worked with Sarnoff at RCA, did a great deal to improve electronic TV, NBC/RCA pushed the idea that he invented TV, RCA did not want to pay royalties
after WWII, how did TV change our daily lives
- shifted how living rooms were arranged.
- daily schedule changes - change in time we wake up, bed, hw, dinner, etc
in what ways did tv reflect societal changes in the 50s? did this continue in the 60s?
- many people moved from cities to suburbs
- working class family struggles
- struggling in the city to middle class suburban life
- transition to middle class is complete with Leave it to Beaver and Father Knows Best
- unlike 50s, 60s, didn’t mimic/encourage change
what are the three ways to receive tv
- broadcast: antenna receives local signal
- direct broadcast satellites (BDS): low-earth orbit satellite (e.g Direct TV)
- coaxial cable tv (atv) cable
explain how the coaxial cable works (atv)
cable co. receives programming from satellite, program sent to home via coaxial cable, early cable provided local tv stations to remote ares thought the use of antennas.
after WWII, most tv stations were placed on which frequency
UHF (ultra high frequency), signal didn’t travel as well.
what were some of the strategies used by Ted Turner that contributed to the success of the UHF station he purchased in Atlanta.
- broadcast reruns of popular shows
- broadcast news at 3am and show Star Trek when other stations broadcasted news
- broadcast non-religious programming sunday mornings
- lured wrestling to his station
- purchased Atlanta Braves and Hawks
- FCC allows UHF stations to send out weak signals to CATV outlets
- with money he creates CNN and TNT
historically, what is the additional source of revenue received by cable networks
subscription fees and advertising
what is a rating point
percentage of the potential television audience
what is a share
percentage of the tv sets in use
describe the difference between a rating point and a share
rating could be low at 2 am but share could be large
what are the two things tv stations can do with their digital feeds
- standard digital format: can include up to 6 stations on same frequency
- high def tv. better quality picuture
what was one of the main motivations for creating the internet
fear of nuclear war promoted creation of Advanced Research Projects Agency
what is a centralized communication network
circuit switched, cut one line and connection was lost, destroy one hub and all connections through the hub are lost
what is a decentralized communication network
used packet switching, network continues to operate even if line or hub fails
what is packet switching
breaking up a larger message into smaller packets and transmitting them independently across the network. the receiving computer reassembles the packets into the original message
please list and describe the components of ‘hypertext’
- uniform resource location (URI) - address of content
- hypertext transfer protocol (http)-standardized set of rules used by servers and browsers by sending and receiving and receiving info.
- hypertext markup language (html) - the original programming language of the web
what are the 3 key developments that helped popularize the web
- the code for www was made public
- commerical users were given access (i.e. co sell things)
- mosaic: first easy to use graphical web browser software
list and describe 4 attributes of the internet discussed in lecture
- accessibility
- volume
- velocity is high
- range is high
what is the accessibility attribute of the internet
internet more accessible.
accessibility = a diffused network, more people providing us with info
what is the volume attribute of the internet
internet is incredibly high volume
high levels of volume = unconstrained amount of information, more info promotes leisure activities, learning, etc.
what does it mean when velocity is high in the Internet
you can send messages incredibly fast, promotes interactivity = dialogic network, people talk to each other in networks. promotes diliberation and democracy
what does is mean when range is high in the Internet
you can send messages long distances quite easily, promotes extended networks
what are the 3 reasons why people are attracted to the Internet discussed in lecture
- interactive, you are active participant
- collaborative, working with other people
- lots of control, lots of choices relative to what content consumed
- instant gratification, get what you want now
