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Ray Tomlinson
Credited with inventing the naming system we have today, using the @ symbol to denote the server (or host, from the previous section)
Cathode Ray Tube (CRT)
invented by German physicist Karl Ferdinand Braun in 1897, was the forerunner of the TV picture tube with a fluorescent screen that emitted a visible light (in the form of images) when struck by a beam of electrons
Scanning Disk
Created by German inventor Paul Nipkow, the scanning disk was a large, flat metal disk with a series of small perforations arranged in a spiral pattern. As the disk rotated, light passed through the holes, separating pictures into pinpoints of light that could be transmitted as a series of electronic lines.
Visual Transmissions
From the early experiments with visual transmissions, two types of television systems came into existence: mechanical television and electronic television
Digital signals
signals transmitted as binary code in 2009, replaced analog signals
Cable Television
initially developed in the 1940s to cater to viewers in rural areas, connected to stations through a series of cables
Broadband network
provide a multichannel television service, along with telephone, high-speed Internet, and advanced digital video services, using a single wire
Digital Television
digital television uses signals that translate TV images and sounds into binary code, working in much the same way as a computer
Partisan News Networks
promote a biased viewpoint that supports their opinions; critics argue it may cause viewers to have less understanding of opposing political opinions, making them more polarized
Public Broadcasting Service (PBS)
Established in 1969 out of a report by the Carnegie Commission on Educational Television, which examined the role of educational, noncommercial television on society to have the government finance public television in order to provide diversity of programming during the network era—a service created “not to sell products” but to “enhance citizenship and public service”
Network Era
The period between 1950 and 1970 where the three major networks (the Big Three being NBC, CBS, and ABC)
Industry Deregulation
The primary challenge to network television has been the rapid growth of cable, which grew exponentially in the 1980s and 1990s as a result of industry deregulation and the use of satellites to distribute local channels to a national audience
Narrowcasting
cable channels sought out niche audiences within specific demographic groups
YouTube
video sharing site bought by Google for $1.65 billion
Video on demand (VOD)
a pay-per-view system that allows viewers to order or download a film via television or the Internet and watch it at their convenience
Nielsen
a company that measures TV viewership, share (how many homes w a tv tuned to a specific channel) and ratings (how many homes w a tv tuned at a specific channel at a specific time)
PrimeStar
formed in November 1990 by seven cable television companies including Comcast Corp. and TCI Communications Corp, the first medium-powered DBS system in the United States but slowly declined in popularity with the arrival of DirecTV
Cable Act
further deregulation in 1984, enabled the industry to expand even further
Direct-To-Home (DTH)
a satellite television broadcasting service that transmits signals directly to individual homes through satellite dishes