Backup Software > Backup Terms Glossary > SD memory card

SD memory card

(Secure Digital Memory Card) A flash memory card that provides storage for digital cameras, cellphones and PDAs. SD Memory Cards use the same 32x24mm form factor as the MultiMediaCard (MMC), but are slightly thicker (2.1mm vs. 1.4mm), and SD Card readers accept both formats. Introduced in 1999 by Panasonic, Toshiba and SanDisk, cards up to 2GB are available.

Learn also: Raspberry Pi Backup SD Card.



Learn more:

  • Types and Examples of Compact Disc
    "A Compact Disc, commonly known as CD, is a polycarbonate disc with one or more metal layers capable of storing digital information. There are several primary…"
  • Disk
    "A disk is a round plate on which data can be encoded. There are two basic types of disks: magnetic disks and optical disks.On magnetic disks, data is encoded…"
  • RS-MMC
    "MMC cards also come in a smaller form factor, of about half the size: 24mm x 16mm x 1.5mm. This alternate form factor is known as Reduced-Size Multi-Media…"


Backup Terms Glossary

Who uses Handy Backup?