Definition: This is a secure memory card about the size of a postage stamp which weighs about two grams. It is used in various types of devices including digital cameras, and can be found with storage up to 256 MB.
Also Known As: SD, SD Card
"Digital Camera Glossary - Secure Digital"
By Michael Carr, About.com
Suggested Reading
Explore Digital Cameras
Must Reads
More from About.com
Work Hard, Travel Easy
The best tips for business travelers.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Hotel Advice
The must-stay hotels worldwide.
©2008 About.com, a part of The New York Times Company.
All rights reserved.