Smart Phone and Next Generation Mobile Computing

208 Smart Phone and Next-Generation Mobile Computing

hereafter), read-only memory (ROM), random access memory (RAM),

expansion storage, network interfaces, an antenna, a battery, and a

display. Some mobile devices also have a hard disk. Among these

hardware components, we are particularly interested in the pro-

cessor, memory and storage, network interfaces, and display. This

section discusses these hardware components to present an overall

picture of mobile terminals. Batteries used in mobile devices were

introduced in Chapter 2.

4.1.1 Mobile Processors

A mobile device is controlled by a small, embedded computer system.

The notion of an embedded system refers to a specialized computer

system that performs a fixed set of functions to control almost any ...