6 Dec
2009
6 Dec
'09
6:31 p.m.
On 6 Dec 2009 at 18:06, Rick Bensene wrote:
The NC7040 appears to be an early 64x4 EEPROM, 2usec access time.
The 7050 is a 256x4 EEPROM. The 7010 is a 256x2; the 7030 is an 8x8.
According to what I can find, Nitron was a division McDonnell
Douglas. See patent 4057821 for what appears to be the basic EAROM
technology developed by Nitron.
And see http://www.astronautix.com/astros/moore.htm for a bio of John
R. Moore.
--Chuck
From the
timeframe of around '73 or so, my trail goes cold. Clearly,
Nitron must have
existed sometime into the 1980's, given the dating on
the chip you found. I have a Nitron single-chip calculator IC from
'73 that is in a ceramic 40-pin dip with gold lid and pins.