Shel -

The "firmware" is really software that is stored on a special integrated 
circuit memory chip mounted on one of the green circuit boards.  A chip 
like this is sometimes called an E-PROM - Erasable Programmable Read 
Only Memory.  Think of it a kind of a solid state hard drive that only 
holds the operating system (firmware).  It probably only has to have 
about 4-6 megabytes of memory, so it won't be physically very large.

Shel Belinkoff wrote:
> That's nice - where does the firmware go?  Tks!
> 
> Shel
> 
> 
> 
>> [Original Message]
>> From: Paul Sorenson
> 
>> Yes, the sheer volume of pix can be a little disconcerting - This link 
>> is probably the best overview.
>>
>> http://www.pbase.com/gmr2048/image/69559230
>>
>> The rectangular black object is the sensor, the green things are circuit 
>> boards and the rust colored items are ribbon cables that connect the 
>> circuit boards together.  
> 
> 
> 


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