Scrabble players are increasingly turning to small handheld devices (PDAs = personal digital assistants) for a convenient resource. Although PDAs are primarily sold as devices for managing personal information like an address book or a calendar, I now see many of my friends buying a contraption for the Scrabble features alone. These devices are like a small computer and can have software and data loaded into them. Just as desktop computers can have different operating systems (eg Microsoft, Macintosh), so too can PDAs. The two major platforms for PDAs are Pocket PC (PPC) and Palm. I prefer the Palm platform and know very little about PPC on PDAs.
Even the cheapest Palm device (eg the Palm Zire Z22) is more than adequate to do all the basics for Scrabble nuts. The only reasons for getting a more expensive model are : larger more readable screen display or (2) easier input eg keyboard or input panel always available or (3) expandability via eg SD cards (for eg storing photos and music).