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The SD Card is the fastest developing memory card format.
It is a further development of the MultiMediaCard and
has additional functions such as data encryption and a write
protect switch.
The SD Card (32 x 24 x 2.1 mm) has the same footprint
as the MultiMediaCard (1.4 mm height) but is 0.7 mm
thicker and has 9 pins instead of 7 and a theoretical
data rate which is four times faster.
It uses the same flash technology as CompactFlash and PC Cards,
but the data is transferred serially rather
than the parallel data transfer used by the ATA protocol.
The memory media is the size of a postage stamp and the
cards are used both in industrial applications and in consumer
devices.
A PC Card
Adapter which was developed by altec allows SD Cards
to be used in any PC Card Type II slot, such as that
found in nearly all notebook PCs.
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Versions
(with item number)
32 MB SanDisk SD Card
I-Grade
altec Item no.: 23SD32
SanDisk Item no.: SDSDB-32-201-80
64 MB SanDisk SD Card
I-Grade
altec Item no.: 23SD64
SanDisk Item no.: SDSDB-64-201-80
128 MB SanDisk SD Card
I-Grade
altec Item no.: 23SD128
SanDisk Item no.: SDSDB-128-201-80
256 MB SanDisk SD Card
I-Grade
altec Item no.: 23SD256
SanDisk Item no.: SDSDB-256-201-80
512 MB SanDisk SD Card
I-Grade
altec Item no.: 23SD512
SanDisk Item no.: SDSDB-512-201-80
1.0 GB SanDisk SD Card
I-Grade
altec Item no.: 23SD1024
SanDisk Item no.: SDSDB-1024-201-80
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