You may be able to write notes in your natural handwriting. Some PDAs can even convert your natural handwriting to typed text. In some cases, you can teach the software how you typically write letters for better conversion. Test the handwriting recognition on several PDAs to make sure you re comfortable with how it works. Other PDAs have built-in keyboards.
External keyboards are available as accessories for smaller PDAs.
Some PDAs can record voice memos, while some others can with additional hardware. Adaptability Some PDAs can be upgraded. You may be able to add software from the Web or other sources, and some PDAs offer more software applications than others. For example, there are many games available for use on some PDAs. You also may be able to add memory or removable storage to a PDA, or connect it to an external monitor, a network, or a modem.