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Ergonomics
PDAs come in a wide spectrum of sizes and weights, from
credit card size to the dimensions of a hardcover book. Size
directly influences the portability of your PDA. A palm
device should fit into a shirt or pants pocket while a
handheld will fit in a coat pocket or briefcase. Handhelds
weigh between 200-1500 grams depending on screen and
keyboard size, whereas palm units are lighter around 100-250
g.
When deciding on a PDA, hands-on feel is important. For
example, a heftier palm device could strain the grip of
someone with small hands. Alternately, someone with large
hands might get frustrated with the tiny keys on a
particular handheld keyboard. If you're a left-hander, be
warned that all palm devices are subtly designed for right
handers. Features like scroll bars, launch buttons and
stylus holders might be in the wrong place for you.
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