On 2024-05-25 3:57 p.m., Chuck Guzis via cctalk wrote:
On 5/25/24 13:41, Fred Cisin via cctalk wrote:
On Sat, 25 May 2024, Chuck Guzis via cctalk wrote:
. . . or 100V or 220V in locations where those are the standard for
household residential wiring.
Woulld not want to automatically exclude U
On 2024-05-25 5:42 p.m., Mike Katz via cctalk wrote:
I'm sorry but I beg to differ with you here. The DEC PDP line of single
user interactive computers (as opposed to batch processing only systems)
started in the late 1950's and early 1960's and spawned many generations
as well as copies and
On Sat, 25 May 2024, Chuck Guzis via cctalk wrote:
> > I think it was indeed the way to tell NEC V20 and other x86 chips apart:
> > good if you wanted to make seamless use of the 8080 emulation mode).
>
> Is this something you've actually verified? Seems to be a bit of an
> urban legend. I ca
On Sat, May 25, 2024 at 5:16 PM Mike Katz via cctalk
wrote:
> You see, we are back to my original comment. The definition of Personal
> Computer is quite fluid. Does it have to be called a Personal Computer
> in advertising literature or does any computer that can be used by a
> single person,
On Sat, May 25, 2024 at 1:33 PM Rick Bensene via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> I'm just adding some thoughts to the discussion.
>
> Rick Bensene
> The Old Calculator Museum
> https://oldcalculatormuseum.com
Rick,
I always appreciate your incredibly informative contributions.
Se
On 5/25/24 18:50, Maciej W. Rozycki via cctalk wrote:
> I think it was indeed the way to tell NEC V20 and other x86 chips apart:
> good if you wanted to make seamless use of the 8080 emulation mode).
Is this something you've actually verified? Seems to be a bit of an
urban legend. I can test i
On Sat, 27 Apr 2024, Fred Cisin via cctalk wrote:
> How many know that AAM is a two byte instruction, with te second byte beint
> 0Ah?
> Changing the second byte to 8 gave division by 8, etc.
It's the kind of a question you can't really answer, but the feature has
been known since forever. Mys
You see, we are back to my original comment. The definition of Personal
Computer is quite fluid. Does it have to be called a Personal Computer
in advertising literature or does any computer that can be used by a
single person, in any environment, constitute a personal computer.
If i am writi
I'm sorry but I beg to differ with you here. The DEC PDP line of single
user interactive computers (as opposed to batch processing only systems)
started in the late 1950's and early 1960's and spawned many generations
as well as copies and other companies (Data General being the most well
kn
Now that is an interesting refinement. Limiting to 1800 VA, most likely
eliminates almost anything vacuum tube based.
My 1974 PDP-8/E computer alone (not counting external storage devices)
was rated at 115V @ 10A. I don't know what the power factor of it is
but that is 1150 Watts. Does that
I have an old Logical Devices Inc, Gangpro 8 with DIP sockets on it.
What package is this part? Is it compatible with anything more widely
known?
On 5/25/2024 12:23 PM, Glen Slick via cctalk wrote:
On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk
wrote:
Hi all,
anybody in the US
On 5/25/24 13:41, Fred Cisin via cctalk wrote:
> On Sat, 25 May 2024, Chuck Guzis via cctalk wrote:
> . . . or 100V or 220V in locations where those are the standard for
> household residential wiring.
> Woulld not want to automatically exclude UK machines, such as the
> Sinclair doorstop wedge.
(Rick--IIRC, some later Curta (knockoffs?) could do square roots too, is that
true, do you have one?)
OK, I'll loosen up, or make exceptions.
Maybe some devices before the altair used the exact or inexact words "personal
computer".
but they did not "create a market" or lead directly to a serie
On Sat, 25 May 2024, Chuck Guzis via cctalk wrote:
On 5/25/24 08:14, Jon Elson via cctalk wrote:
Offhand, if I were King of the World, I'd immediately eliminate from
competition those computers that cannot be run from a US 120 volt 15 amp
wall receptacle. The rationale being that anything that
While the LGP-30(vacuum tube/drum), G-15(vacuum tube/drum), and
PB-250(transistor/delay lines) predated it, the ground-breaking Olivetti
Programma 101(transistor/delay line) programmable desktop calculator was
officially called a "personal computer" in some of its advertising and sales
literatu
On 5/25/24 13:05, CAREY SCHUG via cctalk wrote:
When announced and sold new, were the SIMON, LINC and G-15 sold and described as, in the
exact words, "personal computer"? Did the guy with multiple supercomputers in
his basement buy them NEW, to use them for their designed purpose? If not they
On Sat, May 25, 2024 at 11:05 AM CAREY SCHUG via cctalk <
cctalk@classiccmp.org> wrote:
>
> Because ONE *developer* of the LINC used his position to take one home and
> use it the way we currently use "personal computers" does not mean EVERY
> OTHER LINC was also a personal computer. Did he pay t
When announced and sold new, were the SIMON, LINC and G-15 sold and described
as, in the exact words, "personal computer"? Did the guy with multiple
supercomputers in his basement buy them NEW, to use them for their designed
purpose? If not they are just memorabilia, like a victrola.
Somebody
On Sat, May 25, 2024 at 6:27 AM emanuel stiebler via cctalk
wrote:
>
> Hi all,
> anybody in the US could program some SCM90448 EPROMs for me?
> None of my programmers I have here, can do it.
>
> Some old, trusty DATA I/O ???
What is an SCM90448? Can you find a datasheet for that part? I cannot.
On 5/25/24 08:14, Jon Elson via cctalk wrote:
> Yes, the Bendix G-15 was said to be the first personal computer. It was
> as big as a refrigerator, and weighed a LOT more, and drew much more
> power. (300 vacuum tubes, 3000 Germanium diodes, drum memory.) but,
> one guy could program it and run
On Sat, May 25, 2024, 8:14 AM Jon Elson via cctalk
wrote:
> On 5/24/24 11:49, Mike Katz via cctalk wrote:
> > The problem with this debate is that the definition of
> > Personal Computer is totally fluid and can be written so
> > that the writers opinion is fact.
>
> Yes, the Bendix G-15 was said
On 5/24/24 11:49, Mike Katz via cctalk wrote:
The problem with this debate is that the definition of
Personal Computer is totally fluid and can be written so
that the writers opinion is fact.
Yes, the Bendix G-15 was said to be the first personal
computer. It was as big as a refrigerator, and
On Fri, May 24, 2024, 5:48 PM Rich Alderson via cctalk <
cctalk@classiccmp.org> wrote:
>
> And Sellam is simply wrong.
>
> Rich
>
You got your opinions, I got mine. And old Billy Boy has some skeletons in
his closet. Perhaps literal
Hi all,
anybody in the US could program some SCM90448 EPROMs for me?
None of my programmers I have here, can do it.
Some old, trusty DATA I/O ???
Thanks!
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