July 2008
Intermediate to advanced
544 pages
16h 52m
English
Content preview from Computers as Components, 2nd Edition
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8 CHAPTER 1 Embedded Computing
must also perform huge amounts of computation in real time. Not only are cell
phones taking over some PC-oriented tasks, such as e-mail and Web browsing, but
the components of the cell phone can also be used to build non-cell-phone systems
that are very energy efficient for certain classes of applications.
1.1.4 The Physics of Software
Computing is a physical act. Although PCs have trained us to think about computers
as purveyors of abstract information, those computers in fact do their work by
moving electrons and doing work. This is the fundamental reason why programs
take time to finish, why they consume energy, etc.
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