Memory card
Memory cards are solid-state electronic flash memory data storage devices used with digital cameras, handheld and laptop computers, phones, music players, video game consoles and other electronics. They offer re-recordability, power-free storage, small form factor and rugged environmental specifications.
| Name | Acronym | Form factor |
|---|---|---|
| CompactFlash I | CF-I | 43 × 36 × 3.3mm |
| CompactFlash II | CF-II | 43 × 36 × 5.5mm |
| SmartMedia Card | SMC | 45 × 37 × 0.76mm |
| Memory Stick | MS | 50.0 × 21.5 × 2.8mm |
| Multi Media Card | MMC | 32 × 24 × 1.5mm |
| Secure Digital Card | SD | 32 × 24 × 2.1mm |
| miniSD Card | miniSD | 21.5 × 20 × 1.4mm |
| xD-Picture Card | xD | 20 × 25 × 1.7mm |
Since all sorts of EEPROM devices only allow a finite number of write cycles, some of these cards incorporate wear levelling algorithms to spread the wear and to avoid wearing out specific places which are often written to.