Your right arm is in your palmIn the 1980s no one who was anyone went anywhere without their Filofax. In the late 1990s it replaced it with its digital equivalent: the Personal Digital Assistant (PDA). A PDA is effectively a portable PC, capable of handling all the normal tasks of its leather-bound ancestor: address book, notepad, appointment book and telephone book. Most PDAs also offer many other applications, such as spreadsheets, word processors, databases, financial management software, clocks, calculators, and games. PC users have the ability to transfer data between the portable device and a desktop PC and convert data to and from existing organizer applications. They also achieve connectivity via an infrared port or a special docking station. Due to their size, entering data into a PDA requires a small keyboard or some form of handwriting recognition system. They are too small for touch typing. This relies on a touch-screen display and a simplified alphabet - which takes about 20 minutes to learn - for data entry. Typically, PDAs with the Graffiti system offer the ability to write directly on the display which translates the input into text, or to open a dedicated writing space that also provides examples and online help. I'm thinking of buying a PDA and I've been to all the shops in the city and on the Internet to compile the 5 best PDAs and PDAs according to Microsoft Computers, manufacturer of handheld devices....