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・ Automatic-tracking satellite dish
・ Automatic box-opening technology
・ Automatic braking
・ Automatic calculation of particle interaction or decay
・ Automatic call distributor
・ Automatic callback
・ Automatic center punch
・ Automatic Centre
・ Automatic coin wrapper
・ Automatic Colt Pistol
・ Automatic Complaint-Letter Generator
・ Automatic Computing Engine
・ Automatic Content Extraction
・ Automatic content recognition
・ Automatic control
Automatic curb sender
・ Automatic Data Processing
・ Automatic data processing
・ Automatic Deformation Monitoring System
・ Automatic dependent surveillance – broadcast
・ Automatic differentiation
・ Automatic Digital Computer M-1
・ Automatic Digital Network
・ Automatic distillation of structure
・ Automatic document feeder
・ Automatic double tracking
・ Automatic Drive
・ Automatic Duck
・ Automatic Electric
・ Automatic enrolment


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Automatic curb sender : ウィキペディア英語版
Automatic curb sender

The automatic curb sender was a kind of telegraph key, invented by William Thomson, 1st Baron Kelvin for sending messages on a submarine cable, as the well-known Wheatstone transmitter sends them on a land line.
In both instruments the signals are sent by means of a perforated ribbon of paper but the cable sender was the more complicated, because the cable signals are formed by both positive and negative currents, and not merely by a single current, whether positive or negative. Moreover, to curb the prolongation of the signals due to induction, each signal was made by two opposite currents in succession: a positive followed by a negative, or a negative followed by a positive. The ''aftercurrent'' had the effect of "curbing" its precursor.
This self-acting cable key was brought out in 1876, and tried on the lines of the Eastern Telegraph Company.


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Automatic curb sender」の詳細全文を読む



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