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View Full Version : Smartmedia vs Secure Digital

w6u6f
03-06-2003, 09:07 PM
What 'exactly' is the difference between secure digital and smartmedia? Are they the same? They look the same.
blazingwolf
03-06-2003, 09:34 PM
SD cards and Smart Media cards are very different. A sd card is the size of a postage stamp and a couple of millimeters thick, while a smart media card is while a smart media card is 1.5 in x 1.75 in big. Perhaps you meant a MMC card. The SD and MMC are almsot exactly the same. However, the SD card is more secure and comes in larger MB sizes than the MMC.
w6u6f
03-06-2003, 10:08 PM
What exactly do you mean by 'secure'?
JvanEkris
03-06-2003, 10:34 PM
Yep,

Also one technical difference: SD cards cannot be read with MMC-readers, but MMC-cards can be read in SD readers. Also MMC stopped after 128Mb, SD is now at 512Mb and rising:)

Jaap
ghostppc
03-06-2003, 10:42 PM
What exactly do you mean by 'secure'?

Secure Digital Cards have a little switch on them to prevent accidental writing to them. Kind of like the switch on the old 3.5 inch floppy disks. :P
JvanEkris
03-06-2003, 10:47 PM
Secure is more the secure as in "Digital Rights" 8O

There is a preperation on thes cards, making them prepared for some kind of digital rights management system. They probably have an unique code with them, making it possible to link a piece of music to a SD-card. If you copy it to another medium, the music stops working :(

I have bought a transcend 512 Mb SD today, and it's on the package as well that it is prepared for digital rights management.

Jaap
Janak Parekh
03-06-2003, 11:54 PM
By the way, you don't want SmartMedia if you have a choice. It's a dead technology that's on its way out.

--janak
PetiteFlower
03-06-2003, 11:56 PM
Are there even any PPCs with smartmedia slots?
Janak Parekh
03-07-2003, 12:02 AM
Are there even any PPCs with smartmedia slots?
No, although there are SM-to-PC card adapters (and maybe SM-to-CF adapters, I can't remember).

--janak
w6u6f
03-07-2003, 09:36 PM
First of all thanks for your help.

I was just wondering if anyone knew of a website on where I can find out how Secure Digital memory actually works? Like what technology it uses and stuff like that.
blazingwolf
03-07-2003, 09:47 PM
Try www.sdcard.org . Also do a google search for "what is a SD card".