15 Cards in this Set
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3rd Screen
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Cell Phone
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Bell vs. Gray
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Bell was credited with inventing the first practical telephone
There was a rush to the patent office, Bell won but was accused to stealing some of Gray's ideas
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Ma Bell & AT&T
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Ma Bell was the colloquial name for the Bell System
Named after Alexander Graham Bell
It was a conglomerate (mixture of different types of services); held a near complete monopoly over all telephone service in most areas of the country
AT&T is now new Bell System, owning 10 of the ori…
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Social/Business Implications of Telephones
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Empowerment of women
Skyscrapers were now functional
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Ma Bell Demise
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FDR put them on his "bad list"
Great Depression
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Communications Act of 1934
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Franklin D. Roosevelt
The Act replaced the Federal Radio Commission with the Federal Communications Commission (FCC)
combined and organized federal regulation of telephone, telegraph, and radio communications
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Common Carriers
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public communication services
FCC regulated
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1984 Antitrust Judgment
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Claimed AT&T was a monopoly
made to sell parts of their company
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Telecommunications act of 1996
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primary goal was deregulation of the broadcasting market
said multiple mediums is okay ex. wireless, landline, internet
removing barriers of entry into the market
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Modems
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device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information
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DSL
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Digital subscriber line
provide internet access by transmitting digital data over the wires of a local telephone network
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FIber Optic
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transmitting information from one place to another by sending pulses of light through an optical fiber
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Packet Switching
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delivery of variable-bit-rate data streams (sequences of packets) over a shared network
Each packet is then transmitted individually and can even follow different routes to its destination
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"Cell" in Cell Phones
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cell phone towers emit signals 360-degrees around the tower
this is called a cell
cell of service
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1g, 2g, 3g, 4g
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first generation of cell phone technology; uses analog signals
2nd generation; uses digital signals; text messages introduced
3rd generation
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TC 101: Exam 3