Sandra Bond Chapman, director of the Center for BrainHealth, says older brains switch over to emphasize "gist" processing.

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The Transaction Processing includes Authorization, Settlement and Switch charges as well as connectivity charges.

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Sun's announcement marks the information technology industry's latest step toward "utility computing, " a grid system in which companies pipe in data processing and storage from faraway server farms, says Nicholas Carr, author of The Big Switch, a book on utility computing published earlier this week.

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