Gil, as the article stated, 'NAND' is short for 'Not And'. Basically, it refers to a logic circuit that will only output a logical zero if all its inputs are logical ones. For NAND flash, the basic attributes are as follows... "NOR Flash is connected to a address / data bus direct like other memory devices as SRAM etc. NAND Flash uses a multiplexed I/O Interface with some additional control pins. NAND flash is a sequential access device appropriate for mass storage applications, while NOR flash is a random access device appropriate for code storage application.NOR Flash can be used for code storage and code execution. Code stored on NAND Flash can't be executed from there. It must be loaded into RAM memory and executed from there." (sorry you asked yet?) "NAND is typically faster than NOR for large writes. A typical NOR write is 10uS per word, which results in 1280uS per 512 bytes on a 32-bit bus. A typical NAND write is 50nS per byte + 10uS page seek + 200uS program which results in 236uS per 512 bytes on a 8 bit bus. As NAND Flash is cheaper than NOR Flash and has a very slim interface it was selected as the optimum solution for large nonvolatile storage applications such as solid state file storage, digital audio/voice recorder, digital still camera and portable applications requiring non-volatility."
The secure card is designed to support secure downloads, EDIG had some involvement with the association that developed the standards for this type of flash card ( http://www.edig.com/partners/associations.html )
As far as competition, I know of no EDIG involvement with PDAs, per se.
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