How Much Information? 2003 - http://www.sims.berkeley.edu/research/projects/how-much-info-2003/execsum.htm
- Dear ColleaguesThe world produces between 1 and 2 exabytes of unique information per year, which is roughly 250 megabytes for every man, woman, and child on earth. An exabyte is a billion gigabytes, or 1018 bytes. Printed documents of all kinds comprise only .03% of the total. Magnetic storage is by far the largest medium for storing information and is the most rapidly growing, with shipped hard drive capacity doubling every year. Magnetic storage is rapidly becoming the universal medium for information storage. print, film, magnetic and optical and seen or heard in four information flows through electronic channels telephone, radio and TV, and the Internet. This study of information storage and flows analyzes the year 2002 in order to estimate the annual size of the stock of new information recorded in storage media, and heard or seen each year in information flows.
Newly created information is stored in fourphysical media
This report is available for your use at http://www.sims.berkeley.edu/research/projects/how-much-info-2003/execsum.htm
Please feel free to write for photocopy if you are interested in any part or full copy oof this report.