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Friday, September 16, 2011

Types Of Memory Cards for Computer, Mobile Phones and Digital Camera

1.PCMCIA (Personal Computer Memory Card International Association) - The PCMCIA standard has been expanded several times and are suitable for many types of devices. There are three types of PCMCIA cards-

Type I cards can be up to 3.3 mm thick, and are used primarily for adding additional ROM or RAM to a computer.

Type II cards can be up to 5.5 mm thick. These cards are often used for modem and fax modem cards.

Type III cards can be up to 10.5 mm thick, which is sufficiently large for portable disk drives.

2.Compact Flash - Compact Flash is the de facto standard to flash memory Storage. It is used everywhere from digital cameras to MP3 players to embedded systems. There are two variants of Compact Flash: Type 1 & Type 2. CF Type 2 cards are a little bit thicker than CF type I Cards. Currently CF Type 2 cards house devices like Micro drive and WiFi network Card. CF cards are very robust and industrially proven to be reliable.

3.Secure Digital card - Secure Digital card is basically the second generation Multimedia Card. They are exactly the same as MMC physically, other than the extra locking switch on the SD Card. The locking switch prevents data from being read, written, and deleted from the storage card. A SD Card device can also read and write MMC.

mini Secure Digital card -Recently a new smaller SD Card has emerged on the market. It is called the mini SD Card. The card is originally intended for use in mobile phones and miniature electronics, such as MP3 players.

micro Secure Digital card - The micro SD Card is even smaller than the miniSD Card. The micro SD Card is designed for use in cellular phones and small mobile devices. The micro SD Card can accessed in a SD Card slot via an adapter.

4.Multimedia Card - The Multimedia Card (MMC) standard was introduced by SanDisk and Siemens in 1997. MMC is smaller but slightly thicker than the Smart Media cards. Its interface pins are on its backside and lay similarly to Memory Stick. The card itself is 32 mm x 24 mm x 1.4mm and is often used in place of the SD card. Transfer speeds of a MMC is around 2.5MB/s and they can often be used in SD Card readers.

5. Sony Memory Sticks - Sony Memory Sticks are light, compact and designed for a wide variety of devices including digital cameras, recorders, and more. Memory Stick uses a serial interface to transfer data between the host device and card.

        Memory Stick PRO - Sony Memory Stick PRO is the new Standard to eliminate the 128 MB limitation. Currently, Memory Stick PRO is available up to 1 GB. Memory Stick PRO will not work in devices that only support the standard Memory Stick. But Memory Stick PRO devices are compatible with the original Memory Stick. Today, all 128MB, and under, cards are Memory Stick, while all larger cards are Memory Stick PRO.

         Memory Stick Duo - Memory Stick Duo and Memory Stick Pro Duo are basically smaller versions of the Memory Stick and Memory Stick Pro. The Duo has pin-to-pin compatibility with its older and larger Memory Stick sibling.

6. Smart Media - Introduced by Toshiba in 1995 . Smart Media card is the first challenger to the flash memory market. It is smaller and thinner than the CF cards. It also has contact pins directly on the surface of the card.

7. xD-Picture Card - xD-Picture Card is a contender invented and promoted by Olympus and Fuji. the xD-Picture Card is a type of removable flash memory designed for use in digital cameras. The xD is ultra-compact with its size of 20mm x 25mm x 1.7mm.







Related Terms:
      Types Of Computer Memory Cards
      Digital Camera Memory Cards
      Mobile Phones Memory Cards
      

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