Why is the window in the erasable devices ( EPROM) a small separately made
piece of quarts. Why isn't the whole upper side of the component made of
a large block of it. That would make the production cheaper. Erasure can
be made even through plexiglas for 5..10 times before it goes 'black' to
UV. And there is even some UV detectors packed in plastics, who stay
functionary for years. This kind of package could make OTP's obsolete.

--------------------------------------------------------------------------
PTM, pasi.mustalahti@utu.fi, ptmusta@utu.fi, http://www.utu.fi/~ptmusta
Lab.ins. (mikrotuki) ATK-keskus/Mat.Luon.Tdk                    OH1HEK
Lab.engineer (PC support) Computer Center                       OI7234
Mail: Turun Yliopisto / Fysla, Vesilinnantie 5, 20014
Pt 02-3336669, FAX 02-3335632 (Pk 02-2387010, NMT 049-555577)
--------------------------------------------------------------------------