COMMUNICATING DIGITAL CONTENT
GPS (Global Positioning System)
:explode: Navigation system that consists of one or more earth-based receivers.
:explode: That is in wide use for mobile communications.
:explode: Distributes radio signals through the air over long distances.
How HD Radio Works
:explode: Radio waves that provide a high-speed signal transmission.
:explode: Space station that receives microwave signals from an earth-based station.
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Unshielded Twisted Pair Cable
Shielded Twisted Cable
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Wireless Transmission Media
Physical Transmission Media
:star:canceling out electromagnetic interference
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:star: used to carry light
:star:long distance telecommunication
:star:high-speed data connection between different parts of a building.
:star:used as a transmission line for radio frequency signals
:star: cable you plug in the back of a tv
:star:cable modems for internet
Network Communication Standards and Protocols
Network standard to specify no central computer or device (nodes) should control when data can be transmitted
Computer and device on network share or pass a special signal.
Network protocol defines how data is routed from one end to another
Identify network standard (802.11)
Use make two wireless devices can communicate each other over the air
That are used for short-range radio waves to transmit data
UMB that are use short-range radio waves to communicate
High speed communication each other
Uses radio signals to communicate
The connection must tag placed in or attached to an object, an animal, or a person
Based on RFID
Use of close-range radio signal
The communication between two device or object equipped with NFC tech
1.That’s is high-speed cellular transmission
2.Use broadcast radio to transmit data
transmits data wirelessly via infrared (IR) light waves
Telecommunications path between two points
Use by a designated user (individual or company).
Can be a physical path owned by the user or rented from a telephone company and it is called a leased line.
Integrated Services Digital Network (ISDN)
Set of communication standards simultaneous digital transmission
Other network services over the traditional circuits of the public switched telephone network
Up to 1.54 Mbps
Cable Internet connection.
Provide extremely fast access to the Internet.
256 Kbps to 52 Mbps
Asynchronous transfer mode (ATM).
Defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic
To meet the needs of the Broadband Integrated Services Digital Network
To unify telecommunication and computer networks
155 Mbps to 622 Mbps, can reach 10 Gbps
A fibre optic connection all the way from the telephone exchange to the premises
5 Mbps to 300 Mbps
A digital subscriber line (DSL)
To connect a computer or router to a telephone line
Provides the digital subscriber line service for connectivity to the Internet
256 Kbps to 8.45 Mbps
Developed by AT&T Bell Laboratories
Digital transmission of multiplexed telephone calls
Supports faster downstream rates than upstream rates
hardware that transmit;
data, instructions & info
Wireless Access Point (WAP)
Broadband wireless router
Mobile broadband wireless router
local area network(LAN)
→ limited geographical area
→ uses no physical wires
metropolitan area network
wide area network(WAN)
→large geographic area
personal area network(PAN)
computers and devices connected via communications devices and transmission media
Sharing data and information
Provide an interface for user to communicate
Manage the transmission media of data, instructions and information
Establish a connection to another computer, mobile device or network
process of transfering data involving two or more computers and devices