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More than 295 billion gigabytes products since 1986

According to a study by the University of Southern California, thevolume of information produced from 1986 to 2007 in the worldbeyond the 295 billion gigabytes.

From 1986 to 2007, humans have built more than 295 billiongigabytes or 295 exabytes, or 1018 bytes of data, if one believes a study directed by Martin Hilbert of the University of Southern California. Published in the journal Science, this study aimed toassess the evolution of volumes of data produced by sixty digitalstorage technologies, but also analog.

Letters, books, VHS tapes, CDs, DVDs, hard disks, memory ofmobile phones, etc.., weight in bytes of each medium has beenestablished to standardize the calculations. Then the volumesproduced over the years have been estimated based on numerousstudies conducted in particular by the American firm IDC