Title: What Is Isdn?

Essay Details

Subject: Technology
Author: Lucia P
Date: June 30, 2014
Level: University
Grade: A
Length: 18 / 5314
No of views: 0
Essay rating: good 0, average 0, bad 0 (total score: 0)

Essay text:

The voice was carried by modulating an electric current with a waveform from a microphone. The receiving end would then vibrate a speaker coil for the sound to travel back to the ear through the air. Most telephones today still use this method. Computers, however, are digital machines. All information stored on them is represented by a bit, representing a zero or a one...

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Computers, however, are digital machines. All information stored on them is represented by a bit, representing a zero or a one. Multiple bits are used to represent characters, which then can represent words, numbers, programs, etc. The analog signals are just varying voltages sent across the wires over time...

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