On Mon, 19 Nov 2001, Bob Shannon wrote:
> In my experiance, very early chips used a purple ceramic with a high
> thorium content causing the distinctive color. Unfortunatley, this
> thorium emits low level particles that cause soft errors, which became
> apparent in the early days of DRAM.
>
> This drove a change in ceramic processing and costs, pointing the way
> towards todays plastic packages.
Cool. This knowledge is worth a whole lot more to me than $565.
:)
Sellam Ismail Vintage Computer Festival
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Received on Mon Nov 19 2001 - 21:52:11 GMT