Digital Cameras, Printers, Laptops, MP3 Players, and mobile phones all have one thing in common, a memory card. The flash-based technology allows the user to hot swap the card between many different devices. These cards are nonvolatile therefore retaining there memory/data when removed from a source of electricity. Memory cards can easily be replaced, formatted, and re-used.
What does this mean to you as a consumer? You have to consider various factors before purchasing. Some of these factors are: price, compatability, and capacity. Depending on your device your choices may be limited as some devices only allow certain types of memory card, and sometimes even a limit on the capacity.
More...