(Handheld PC) A Windows CE based device that has a keyboard (built in / non-digital) CF (Compact Flash) A small expansion that can be memory or other connectivity based hardware MMC (MultiMedia Card) A memory expansion that is much smaller then a CF Card The card is the same size as an SD card, though
Handheld Personal Computer Term coined by Microsoft to coincide with the launch of their Windows CE operating system Really, it's the same thing as a PDA though Microsoft would like you to beleive it's a shrunk-down PC rather than an expanded address book