Two of the most important components today in a mobile device are the battery and the
display. It can be argued, that if battery and display technology had not evolved as fast
as it did these last few years, features like color displays, high-speed data applications,
assisted global positioning system (GPS), and 3D graphics would not be available in a
portable device.
5.1.1 Battery Challenge
As mobile devices evolved from analog to digital technology, batteries for mobile devices
evolved from sealed lead acid (SLA) to nickel metal hydride ...
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