Dan Inscribed thus:

Baron wrote:
Dan Inscribed thus:

Baron wrote:
Dan Inscribed thus:

Baron wrote:
flipper Inscribed thus:

On Wed, 16 Jun 2010 10:41:50 -0600, "Dave Ulmer"
wrote:

"Archimedes' Lever" wrote in
message ...
On Wed, 16 Jun 2010 09:48:29 -0600, "Dave Ulmer"
wrote:

Dave...


Idiot! "IC"s NEVER "had less than ten transistors", you
stupid twit.

The very first IC HAD ten transistors, so there were none
"that had
less".

The Diode Transistor Logic (DTL) single flip flop ICs that I
used in 1969 had less than 10 transistors!

Dave...


Don't worry. He does that all the time and is quite reliably
wrong.

One of, if not, the first commercial ICs was the
Fairchild-Micrologic type "F" (flip-flop) stuffed to the brim
with a mind boggling 4 transistors.

http://www.computerhistory.org/colle...sion/102696650

They also had the type "G" nor gate.

T.I. made similar 'chips', and there is debate as to whether
theirs or Micrologic's was 'first', but their early production
was entirely consumed by NASA and the military so many consider
that not 'commercially available'.
I vaguely remember that I was playing about with "Ferranti"
packaged circuits, circa late 60's that had four transistors. I
also seem to recall that the colour of the plastic indicated what
type of circuit
was in the package. Oh those fun days... :-)

Remember ICs in round metal cans? I also remember an MIT open
house where they had a flip flop in an IC in a dipped (epoxy?)
package in the late 1960s. They used it in a decade counter.

Dan, U.S. Air Force, retired
Hi Dan.
I do recall those ! In fact I may still have one or two kicking
about in one of the many boxes of junk that seem to grow ever more
numerous. I was hunting for something the other day and came across
a packet with a couple of point contact diodes with the threaded
ends complete with
the nuts for attaching the wires to them. Goodness knows how old
they are.

Those go back to hybrid systems with tubes, if memory serves.
Not
that I am old enough to remember such things.

Not too long ago I found a schematic for a nixie tube clock
using an IC switching transistors to drive the tubes.
Interesting combination.

Dan, U.S. Air Force, retired

One of these days I'm going to have to take some photos of all the
interesting bits of junk that I have kicking about. SWMBO wants me to
dump it all !
One day, one day :-)
You can bet my kids will when I pass on.


My ex used to refer to my stash as "your father's junk heap" when
talking to my children. Once in awhile I get rid of things like the 8"
disk drives I chucked a few years ago. Do you know anyone who needs
some core memory?

Dan, U.S. Air Force, retired

Its many years since I saw any of that kind of memory. I've seen it on
display in a museum quite recently. It would be a shame to simply junk
it, trouble is few appreciate the technological advancements made to
get to where we are today. The only other application I can bring to
mind that used core storage is the "Seeburg Jukebox" ! I used to have
spare mechanism. Not the whole deck just the core memory assembly in
its steel box with the contact strip running along its length. It got
damp and went rusty so it got disposed of. The spare audio amplifier
was given to a young chap who used it as a guitar amp. I don't know
what became of him.

--
Best Regards:
Baron.