their primary business?
Yes, the primary linear
business, although I think the digital portion (RTL and DTL) was still much
larger. For the linear, op amp was king.
So they figured that if I designed a circuit that replaced one or
two op amps, that would cut into their sales.
the 555 name come about?
Signetics had “500” numbers,
and the earlier product I worked on was the 565, 566 and 567. It was just arbitrarily chosen. It was
Art Fury (Marketing Manager) who thought the circuit was gonna sell big who
picked the name “555”.
how many of these have been made?
At the moment, it is about 1
billion devices a year. These are
mostly made in Korea now, Samsung.
The electronics industry is big now.
there other chips with this kind of popularity?
You could say that the op amp
is bigger, but there are so many different op amps, they have to specialize
– there is no perfect op amp, so you optimize it, for different
parameters. There must be 500
different op amp types.
ones were plastic or metal?