Exam 3 wk 13/14 Lecture

Question 1

what was the first television technology? how did it work?

Answer 1

mechanical television, patented a spinning disk (Nipkow), electromecanical system using the Nipkow system (Baird)

Question 2

who was awarded the key patent for the first electronic TV system

Answer 2

Farnsworth, developed first ALL electronic TV system, camera and receiver, awarded patent over Zworykik

Question 3

What is there such a debate surrounding who invented TV

Answer 3

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

Question 4

after WWII, how did TV change our daily lives

Answer 4

• shifted how living rooms were arranged.

- daily schedule changes - change in time we wake up, bed, hw, dinner, etc

Question 5

in what ways did tv reflect societal changes in the 50s? did this continue in the 60s?

Answer 5

• 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

Question 6

what are the three ways to receive tv

Answer 6

• broadcast: antenna receives local signal
• direct broadcast satellites (BDS): low-earth orbit satellite (e.g Direct TV)
• coaxial cable tv (atv) cable

Question 7

explain how the coaxial cable works (atv)

Answer 7

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.

Question 8

after WWII, most tv stations were placed on which frequency

Answer 8

UHF (ultra high frequency), signal didn’t travel as well.

Question 9

what were some of the strategies used by Ted Turner that contributed to the success of the UHF station he purchased in Atlanta.

Answer 9

• 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

Question 10

historically, what is the additional source of revenue received by cable networks

Answer 10

subscription fees and advertising

Question 11

what is a rating point

Answer 11

percentage of the potential television audience

Question 12

what is a share

Answer 12

percentage of the tv sets in use

Question 13

describe the difference between a rating point and a share

Answer 13

rating could be low at 2 am but share could be large

Question 14

what are the two things tv stations can do with their digital feeds

Answer 14

• standard digital format: can include up to 6 stations on same frequency
• high def tv. better quality picuture

Question 15

what was one of the main motivations for creating the internet

Answer 15

fear of nuclear war promoted creation of Advanced Research Projects Agency

Question 16

what is a centralized communication network

Answer 16

circuit switched, cut one line and connection was lost, destroy one hub and all connections through the hub are lost

Question 17

what is a decentralized communication network

Answer 17

used packet switching, network continues to operate even if line or hub fails

Question 18

what is packet switching

Answer 18

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

Question 19

please list and describe the components of ‘hypertext’

Answer 19

• 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

Question 20

what are the 3 key developments that helped popularize the web

Answer 20

• 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

Question 21

list and describe 4 attributes of the internet discussed in lecture

Answer 21

• accessibility
• volume
• velocity is high
• range is high

Question 22

what is the accessibility attribute of the internet

Answer 22

internet more accessible.

accessibility = a diffused network, more people providing us with info

Question 23

what is the volume attribute of the internet

Answer 23

internet is incredibly high volume

high levels of volume = unconstrained amount of information, more info promotes leisure activities, learning, etc.

Question 24

what does it mean when velocity is high in the Internet

Answer 24

you can send messages incredibly fast, promotes interactivity = dialogic network, people talk to each other in networks. promotes diliberation and democracy

Question 25

what does is mean when range is high in the Internet

Answer 25

you can send messages long distances quite easily, promotes extended networks

Question 26

what are the 3 reasons why people are attracted to the Internet discussed in lecture

Answer 26

• 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