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MP3 player questions

Discussion in 'Electronic Repair' started by Trevor Wilson, Feb 9, 2008.

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  1. After yet another visit to a client using a CD player for music on hold, I
    wondered about replacing the thing with an MP3 player. Any thoughts? Are
    they reliable enough to see out a year or two of 8 hours/5 days a week
    operation?

    Trevor Wilson
     
  2. If it uses flash memory, there are no moving parts -- it should last many
    years.
     
  3. **Nope. Flash memory has a life-span. I am wondering if this needs to be
    taken into account.

    Trevor Wilson
     
  4. **Nope - for the most part.
    Flash memory has a _memory write_ life-span.

    I'm sure it can be read over and over again until you smash it with a
    hammer after hearing that !$$##)@{@<>@}@^$ song onemore time. :)

    Jonesy
     
  5. Dave Platt

    Dave Platt Guest

    If it uses flash memory, there are no moving parts -- it should last many
    The limited lifespan of flash is associated with the erase/write
    cycles, which use a high voltage to tunnel electrons through an
    insulating oxide barrier. The high voltage gradually degrades the
    oxide, limiting the number of erase/write cycles per block.

    The number of such erasures varies with the flash type, but is usually
    in the hundreds-of-thousands range (Samsung says it's up to a million
    cycles, if wear levelling and ECC are used).

    There seems to be a storage lifetime, once the data is programmed...
    it's usually quoted as something on the order of 10 to 20 years, if I
    recall correctly.

    I haven't seen any reports, or anything in the data sheets which would
    indicate that the number of *read* cycles for a given flash-memory
    block has any effect at all on the storage lifetime or the number of
    erase/write cycles you can use. Reading doesn't involve modifying the
    stored charge at all... it just senses it via a FET.

    Unless you're planning to download a whole new batch of music to the
    flash music-on-old player ever few hours, I doubt that you'll be able
    to wear out such a device within less than a lotta years. It should
    certainly survive well past the lifetime of a typical CD player!
     
  6. **Thanks for the info. It looks like they will do the job just fine.

    Trevor Wilson
     


  7. **Thanks for the info. It looks like they will do the job just fine.

    Trevor Wilson
     
  8. Only for rewriting. Do you expect to be altering the flash drive all the
    time, every day?
     
  9. Franc Zabkar

    Franc Zabkar Guest

    Hmm, my PC's motherboard is now nearly 10 years old. Is it time to
    refresh/reflash the BIOS EEPROM? Or does the storage lifetime only
    apply if the device is not powered during that time?

    - Franc Zabkar
     
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