100 mln books published in human history, 200K movies, 50K CD-ROMs

About 100 million different books have been published in history, according to the estimates from Carnegie Mellon University. About 28 million sit in the Library of Congress.

About 100 million different books have been published in history, according to the estimates from Carnegie Mellon University. About 28 million sit in the Library of Congress. On average, a book can be condensed to a megabyte in Microsoft Word. Thus, the books in the Library of Congress could fit into a 28-terabyte storage system. Only about 2 million to 3 million audio recordings (mostly music) have ever been published for public consumption. The Internet Archive has begun to store digitized recordings of concerts as well and has about 15,000 shows in its database to date. There are between 100,000 to 200,000 theatrical movies (half of them from India) in existence and about 20 terabytes of TV broadcasts a month. The Web grows by about 20 terabytes of compressed data a month as well. (One terabyte equals 1 trillion bytes.) Since 1984, about 50,000 software titles, including CD-ROMs, have emerged.
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