The idea of comparing the features handheld computers manufactured by companies Casio and Palm, not accidental. The fact that the combined share of these two firms, according to authoritative estimates, far more than half of the global PDA market. By some estimates, 4 out of 5 sold in the world of pocket computers are manufactured in factories, Casio and Palm Computing. And Palm, Casio and today offers a range of devices, which can be rather neatly divided into 3 "weighted" (price) category. Lightweight: Palm m100 - Pocket Viewer PV-S450