Telecommunication 3 min read
Data transmission
Data transmission, Sending and receiving data via cables (e.g., telephone lines or fibre optics) or wireless relay systems. Because ordinary telephone circuits pass…
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The Beginning of Electric Telegraphy
The first transmitters and receivers The electric telegraph did not burst suddenly upon the scene but rather resulted from a scientific evolution that…
Telecommunication 3 min read
Switching
Switching, in communications, equipment and techniques for enabling any station in a communications system to be connected with any other…
Telecommunication 4 min read
Multiple Access
Multiplexing is defined as the sharing of a communications channel through local combining at a common point. In many cases,…
Telecommunication 2 min read
Time-division multiplexing
Multiplexing also may be conducted through the interleaving of time segments from different signals onto a single transmission path—a process…
Telecommunication 2 min read
Multiplexing
Because of the installation cost of a communications channel, such as a microwave link or a coaxial cable link, it is desirable…
Telecommunication 6 min read
Modulation
In many telecommunications systems, it is necessary to represent an information-bearing signal with a waveform that can pass accurately through…
Telecommunication 6 min read
Channel Encoding
As described in Source encoding, one purpose of the source encoder is to eliminate redundant binary digits from the digitized signal. The strategy…
Telecommunication 6 min read
Telecommunication
Telecommunication, science and practice of transmitting information by electromagnetic means. Modern telecommunication centres on the problems involved in transmitting large volumes of…
Systems and controls 2 min read
Other methods of machining
Ultrasonic machining (USM) In USM, material is removed from a workpiece with particles of abrasive that vibrate at high frequency in a…
Systems and controls 4 min read
Electrical-discharge machining (EDM)
EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode,…
Systems and controls 6 min read
Adaptive control
Improvements in CNC machine tools depend on the refinement of adaptive control, which is the automatic monitoring and adjustment of machining conditions…