Here are the mostly used storage devices used by digital cameras: Secure Digital Card (SD) Compact Flash (CF) Multi Media Card (MMC) xD-Picture Card (xD) MiniSD Card MicroSD Card USB flash drive Memory Stick SmartMedia External Hard Drive MMC is about the size of a postage stamp: 24 mm x 32 mm x 1.5 mm,… Continue reading Storage devices and memory cards used on Cameras