I believe that a lot of the development of the electronic reader goes hand in hand with the development of the microprocessor which has been evolving since the 1980s. As far as processing power that I have not seend electronic book readers take advantage of is the multi-core functionatlity, or the ability to do multiple things at the same time. This implies that an electronic reader will be able to download a book in the background while the reader is reading a different book. Also recent advancements in microprocessors have lowered the power requirements for the chip making it possible for new models of electronic readers to last longer between charges. I do not see the development of new ideas as a stumbling block to the development of the electronic reader, the only stumbling block that I can see would be the failure of developers to take advantage of new capabilities of new models of microprocessors.
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