Secure Digital (SD
)
SD memory cards are growing in popularity. For non-Sony consumer digital camcorders, SD is becoming a
standard. Newer PDAs from HP/Compaq/Dell/Palm have also standardized on this format. For information on SD
memory cards, see
http://www.sdcard.org/
Memory Stick (MS)
Originally developed by Sony, these chewing gum–sized (21 x 50 x 2.8mm) modules weigh about 4 grams and
have a rated write endurance of 100,000 cycles. Standard capacity is 4–128 MB; 256 MB modules, configured as
two banks of 128 MB, are also available. The copyright protected modules are known as MagicGate. The Memory
Stick Duo is about a third of the size of the standard Memory Stick. When used with a Memory Stick adapter, it is
compatible with standard Memory Stick applications. See the website
http://www.memorystick.org/e-index.html
for
more information.
Microdrive (MD)
IBM originally developed a tiny hard disk to fit into this ultra-compact form factor. Today, the drives are available
from Hitachi in capacities up to 1 GB; 3–4 GB drives have been announced.
Asanté
Gini Resource Guide
21
