On 12/12/2015 11:17 AM, William Donzelli wrote:
Sometime later, maybe around 1971 they got some IBM 2741 terminals which
were Selectric typewriters connected to an interface. Later they got some
IBM 2260's, which were Zenith 9" TV sets and a keyboard connected to an
interface box in the machine room. Very primitive, but very interactive,
great for quick program editing and submission.
Were 2260s really Zenith products inside? I certainly could believe
it, judging from the tube lineup. Someday I would like to see one up
close and personal.
Yes, they were hideous hacks of a cheap TV set. The VHF
tuner was still in there, as it was needed to complete the
series filament chain. They had 5 tubes in series, with
26-volt filaments, running off 120 V AC. I'm PRETTY sure
the brand was Zenith, but this is from about a 43-year old
memory of pulling the cover off one. All it had was a
keypunch-style keyboard and the TV, all the electronics were
in the machine room.
Jon
