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Handheld computer systems studied

The information on the handheld computers used in this work is summarized in Table II.

Table II: Hardware and software information on the handheld computers
iPAQ1 iPAQ2 Zaurus
Vendor HP/Compaq Sharp
Model 3870 SL5500
SOC Intel StrongARM SA-1110 206$ MHz$
Storage 32MB ROM, 64MB RAM 16MB ROM, 64MB RAM
Display 240$ \times$320, 16bit color, reflective with front light
OS MS Pocket PC 2002 Familiar Linux 2.4.18 Embedix Linux 2.4.6
GUI Windows X/GTK Qt

The two iPAQs are placed in the same charging cradle when energy is measured. The Zaurus, instead, is directly charged by the same AC/DC converter used for the iPAQs. Energy is measured when the batteries are fully charged. All other detachable peripherals, such as CompactFlash cards, serial and USB ports, $ etc.$, are disconnected. Since no current GUI platform has an effect on the front light, it is turned off unless otherwise indicated.
next up previous
Next: Energy measurement Up: Experimental setup Previous: Experimental setup
Lin Zhong 2003-10-13