13 May
2009
13 May
'09
3:08 a.m.
On Tue, 2009-05-12 at 21:05 -0700, dwight elvey wrote:
Hi
First to consider is that to erase them under
room light would take years.
I've left EPROMs outside on a bright sunny day to erase. It didn't
work. I left them out all week, and they still read perfectly. So, in
the interests of experiment, I nuked them in the eraser for five minutes
at a time, reading them off after every blast. They took 20 minutes
before they started to "read wrong", and were fully erased in half an
hour - pretty much what I'd expect.
Okay, so this far north (I'm south of toresbe but probably further north
than most people on here) the sun isn't that strong, but it looks to me
like a week of direct summer sunshine had no effect at all on the
EPROMs.
Gordon