A flash drive is a portable computer drive that uses flash memory. Flash drives are the larger memory modules consisting of a number of flash chips. A flash chip is used to read the contents of a single cell, but it can write entire block of cells.
Specific flash drive types
- Flash memory-based CompactFlash (CF) card (including CFast card) and XQD card (Note: some other types of CF and XQD card are not flash memory-based)
- Memory Stick (MS)
- MultiMediaCard (MMC)
- Secure Digital card (SD, SDHC, SDXC)
- SmartMedia card (SM)
- xD-Picture Card (xD)