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On 09/12/2025 19:07, The Natural Philosopher wrote:
> These might as well be EEprom really! What else is an SD card?

An EEPROM is can be written/erased one byte at a time.

An SD card uses flash memory that can only be written in blocks, and can 
only be erased in pages (which are typically larger than write-blocks).

Flash is typically many times cheaper than EEPROM, byte for byte, and 
its block-structured nature is well suited for mass storage applications 
whose filesystems are block-oriented anyway.

-- 
Cheers,
  Daniel.

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