On Jul 25 11:54 96, Tom Przeor of 3:640/201 wrote:

TP> On 21 Jul 96  12:42:00, Hamish Moffatt wrote to Lewin Edwards:

HM>> So, PROM = EPROM without erase ability, OTP = EPROM with erase ability
HM>> but with the window covered by the plastic case? Surely plastic
HM>> wouldn't be significantly cheaper than ceramic to make this
HM>> worthwhile? 

TP> Material could be around the same price but making ceramic case is
TP> much more complicated (and adding window adds more complexity) and
TP> slower.

The window is clear quartz - middlin' expensive.   It can't be glass - it
has to be short UV transparent.

Regards,
Dave Hatch.

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