During the latter part of the 19th century, people started to witness the creation of record players. Gramophone records, also known as vinyl, were categorized by their dimension (7, 10 or 12-inch) and by their speed (33 �, 45 and 78 rpm). These early recording media replaced the phonograph cylinder that made use of cylindrical [...]
Source: http://news.hqcelebspics.info/2011/09/05/from-vinyl-to-digital-music-a-quick-overview.html
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