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UV EPROM left in the sun DID NOT ERASE in Three Weeks!

August 10, 2017

Huh. My EPROM Programmer did not show up while I was away but I put the CY27C256 EPROM into the olduino to see if it had erased in the 20 days I was away. The contents seems to be untouched. So much for that technique!
17-08-10 uv-no-erase
With any luck I will only have to program this thing once or twice but it seems i may need to get an eraser. In the mean time I may but the EPROM outdoors in a plastic bag and see if that “takes”.

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