Memory Stick-Developed by Sony Corp. and used in a range of Sony products like the PSP. Memory Stick Duo is the small version, which measures 31 x 20 x 1.6 mm. Sony Ericsson Mobile Communications L.P. supports Memory Stick Duo.
Secure Digital Memory Card-Created by Toshiba Corp. and Matsushita Electric Industrial Co. Ltd. Includes the SD, MiniSD and MicroSD sizes. MicroSD is based on SanDisk Corp.’s TransFlash technology and measures 11 x 15 x 1 mm. Motorola Inc., Samsung Electronics Co. Ltd., Kyocera Wireless Corp. and others support MicroSD.
MultiMediaCard-First introduced by SanDisk and Siemens AG. Includes the MMCplus, MMCmobile and-the smallest-MMCmicro sizes. MMCmicro measures 12 x 14 x 1.1 mm. Nokia Corp. is the primary supporter of MMC cards.
