On 11/4/2024 8:55 AM, Kalpesh Patel wrote:
I remember something like that from many moons ago. Specifically it had to
do with vacuum tubes and mechanical relays, rather than transistors, and
early computers were room sized ones when that term came to be in the
computer world's fold.
LOL. I'm old enough to remember.
circa 1960 I and a high school friend constructed a small 4 bit
demonstration computer that was ALL solid state (transistors, hand
strung toroids for core, etc. That was early for a 100% solid state device.
circa 1962 I was at university, summers working on a (then) state of the
art differential analyzer. ONE of the jobs was sitting inside the
machine with a case of 12AX7's replacing tubes as they blew << mean time
between failure ~10 minutes! >> Or taking readings of transistors
sitting on precision hot plates, then on a plate at a different
temperature and putting into the appropriate pigeon hole < when we had
enough pairs that would cancel each other we could make that many solid
state units to replace the $@!%&% tubes - > Or over in the Moore School
library researching circuits, one wall always cold as the other side of
that wall ENIAC still kept running as a museum piece.
Turned me off on computers << back to them ~1979 after experiencing
that hardware had come a long way and rest of my working days spent in
the cypher mines >>
Michael D Novack
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