These dates sound correct: I remember reading the introductory data sheet
for the 4004 in 1971 or 1972. It made no sense at all. I couldn't figure out
what it was. I was used to logic gates and this was alien to me.
1974 sounds right for the 8080. I missed the introduction of that chip but I
was building a Z80 system 3 years later.
Dennis
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-----Original Message-----
From: Brad Thompson, Sunday, January 22, 2012 5:34 PM
Hello, Tom and the group--
IIRC, the 8080 was introduced in 1974; the 4004 was introduced in 1971.
In the early 1960s, I worked as a co-op student at a company that
manufactured magnetic-core logic (nonvolatile, radiation-resistant, very low
power consumption). Four bits per cubic inch.
73--
Brad AA1IP
