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It's development was almost parallel with the desktop computers, yet in its very beginnings was very expensive heavy and non profitable for the public. in the 70's the appeared definitely but its battery was heavy as lead coffin and it would not least to much time
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It was the first communication way with the internet world. this could not be absent in the must influential gadgets from the digital era. Trough it's "strange noises" we connected to internet at speeds that back then seems to be stratospheric. Developed in 1981 by Hayes Communications, the modem provided bidirectional communications between people and developed the internet use massification in the society. Once the green light was given, other communication devices came out to birth but in essence the basics remains the same.
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The Compact Disc is an optical disc used to store digital data. It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data (CD-ROM), write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Discs (VCD), Super Video Compact Discs (SVCD), PhotoCD, PictureCD, CD-i, and Enhanced CD. Audio CDs and audio CD players have been commercially available since October 1982.
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M FAX
Fax (short for facsimile), sometimes called telecopying, is the telephonic transmission of scanned printed material (both text and images), normally to a telephone number connected to a printer or other output device. The original document is scanned with a fax machine (or a telecopier), which processes the contents (text or images) as a single fixed graphic image, converting it into a bitmap, the information is then transmitted as electrical signals through the telephone system. The receiving fax machine reconverts the coded image, printing a paper copy.[1] Before digital technology became widespread, for many decades, the scanned data was transmitted as analog.