In this article the author, Partha Dasgupta explains the difference between "Digitization" and "Digitalization". The first one is decribed as the action of converting something from analog to digital and the second one as the socio-cultural event caused by the mass scale digitization.
He also explains the advantages of digitalization such as quality preservation, possibility of modulation, transmition, amplification, storing, retriving and reconverting independenlty when have these signals been created or how far have they traveled.
He remarks that when computers became cheap and fast enough contributed to descrease the costs of compressing the digital signals and rendering giving everyone the possiblility to digitize everything. Resulting what he calls "Convergence" as the fact of merging all types of information in a similar digital form, no mattering what the data stands for or the source where it comes from.
He also afirms that consumers just need a computer and an internet connection to do all they want, where the most important activity is the data exchange giving place to democratic information, cheaper and fast distributed.
Here is the link if you are interested on reading all the article: http://cactus.eas.asu.edu/partha/Columns/12-24-digital.htm
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