LTSpice Automation
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From: Joerg on 18 Feb 2010 20:15 krw wrote: > On Wed, 17 Feb 2010 16:10:13 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >> Jim Thompson wrote: >>> On Wed, 17 Feb 2010 14:25:26 -0800, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> Fred Bartoli wrote: >>>>> Fred Abse a �crit : >>>>>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>>>>> >>>>>>> Geez, did everybody forget the three phase rectifier efficiency that >>>>>>> Fred Bartoli did for me? Note the stepped load on the right. >>>>>> T'warn't Fred Bartoli,t'was I :-) >>>>>> >>>>> Oh, I thought even I forgot about it :-) >>>>> >>>>> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >>>>> have done it... >>>>> >>>> You guys are spoiled, or too young. Back when I started the "GUI" of >>>> PSpice consisted of a rather small green CRT hanging off some CGA card. >>>> I had the deluxe edition, a CRT in nicotine-yellow :-) >>> Sheeeesh! When I started using Spice I drew schematics on paper pads, >>> numbered the nodes, typed in the netlist and ran it under DOS. >>> >>> Aaron eased my pain by writing a pre/post version controller which >>> numbered all the .CIR and .DAT files so I could keep track of all the >>> changes. >>> >>> Data spewed forth from a tractor feed printer: >>> >>> .001 * >>> .002 * >>> .003 * >>> .004 * >>> >>> etc. Anyone else remember those days? >>> >> A friend of mine tried this with a Commodore daisy wheel printer, same >> that I used to have. It could do microstepping and he just used the dot. >> Which consequently wore out real fast ... > > When I first started with IBM, we used communicating Selectrics and > 2741s (a bullet-proofed Selectric sort of thing) for this. Overnight > runs used a different simulator and chain printers. The printing was > the same as above, though, and printouts were often a foot thick. > Then you probably remember their first PC word processor, EasyWriter. That's what I started out with. Later I learned that the programmer wrote it while doing time in the slammer, IIRC for blue-boxing. >> My first forays in to computing was writing Fortran. Using a Juki punch >> card machine. > > We used IBM 029s in high school and college with a 360/75 (amazing > beast) at the business end. IBM was always the good stuff. We had two IBM punchers and two Jukis, for about 400 students. The IBMs were always occupied, the Jukis broken most of the time. We weren't s'posed to ... but ... I always carried a pouch with tools along. So I repaired one and whoopdidou, had a seat. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: krw on 18 Feb 2010 20:22 On Thu, 18 Feb 2010 17:15:54 -0800, Joerg <invalid(a)invalid.invalid> wrote: >krw wrote: >> On Wed, 17 Feb 2010 16:10:13 -0800, Joerg <invalid(a)invalid.invalid> >> wrote: >> >>> Jim Thompson wrote: >>>> On Wed, 17 Feb 2010 14:25:26 -0800, Joerg <invalid(a)invalid.invalid> >>>> wrote: >>>> >>>>> Fred Bartoli wrote: >>>>>> Fred Abse a �crit : >>>>>>> On Wed, 17 Feb 2010 07:26:20 -0800, JosephKK wrote: >>>>>>> >>>>>>>> Geez, did everybody forget the three phase rectifier efficiency that >>>>>>>> Fred Bartoli did for me? Note the stepped load on the right. >>>>>>> T'warn't Fred Bartoli,t'was I :-) >>>>>>> >>>>>> Oh, I thought even I forgot about it :-) >>>>>> >>>>>> Well, I don't use much LTspice thanks to its poor GUI, so I couldn't >>>>>> have done it... >>>>>> >>>>> You guys are spoiled, or too young. Back when I started the "GUI" of >>>>> PSpice consisted of a rather small green CRT hanging off some CGA card. >>>>> I had the deluxe edition, a CRT in nicotine-yellow :-) >>>> Sheeeesh! When I started using Spice I drew schematics on paper pads, >>>> numbered the nodes, typed in the netlist and ran it under DOS. >>>> >>>> Aaron eased my pain by writing a pre/post version controller which >>>> numbered all the .CIR and .DAT files so I could keep track of all the >>>> changes. >>>> >>>> Data spewed forth from a tractor feed printer: >>>> >>>> .001 * >>>> .002 * >>>> .003 * >>>> .004 * >>>> >>>> etc. Anyone else remember those days? >>>> >>> A friend of mine tried this with a Commodore daisy wheel printer, same >>> that I used to have. It could do microstepping and he just used the dot. >>> Which consequently wore out real fast ... >> >> When I first started with IBM, we used communicating Selectrics and >> 2741s (a bullet-proofed Selectric sort of thing) for this. Overnight >> runs used a different simulator and chain printers. The printing was >> the same as above, though, and printouts were often a foot thick. >> > >Then you probably remember their first PC word processor, EasyWriter. That wasn't their first. The MTST/MCST (Mag Tape/Card Selectric Typewriter) was a word processor, too. ...and there were several mainframe-based systems for such. Yes, I remember SleazyWriter. ;-) >That's what I started out with. Later I learned that the programmer >wrote it while doing time in the slammer, IIRC for blue-boxing. ?? >>> My first forays in to computing was writing Fortran. Using a Juki punch >>> card machine. >> >> We used IBM 029s in high school and college with a 360/75 (amazing >> beast) at the business end. > > >IBM was always the good stuff. We had two IBM punchers and two Jukis, >for about 400 students. The IBMs were always occupied, the Jukis broken >most of the time. We weren't s'posed to ... but ... I always carried a >pouch with tools along. So I repaired one and whoopdidou, had a seat. I don't know why they had IBMs because the university was pretty heavily into CDC (PLATO, and all). The /75 wasn't a small machine (it did the 360 instruction set in hardware - no microcode).
From: Joerg on 18 Feb 2010 20:28 krw wrote: > On Thu, 18 Feb 2010 17:15:54 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > [...] >> Then you probably remember their first PC word processor, EasyWriter. > > That wasn't their first. The MTST/MCST (Mag Tape/Card Selectric > Typewriter) was a word processor, too. ...and there were several > mainframe-based systems for such. Yes, I remember SleazyWriter. ;-) > >> That's what I started out with. Later I learned that the programmer >> wrote it while doing time in the slammer, IIRC for blue-boxing. > > ?? > http://en.wikipedia.org/wiki/John_Draper [...] -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joel Koltner on 18 Feb 2010 20:37 "krw" <krw(a)att.bizzzzzzzzzzz> wrote in message news:hforn5todgh8shm5elno5spnc0j3edk3n1(a)4ax.com... > Amazing. Where did you go to school? University of Wisconsin-Madison. In the early '90s there was still more variety of computers as well -- PCs were clearly the most popular with Macs second, but there were also a sizeable number of people with Atari STs, Apple IIGSes, Amigas and even some NeXTstations for the real hard-core computer guys; there were user groups for most that met somewhere reasonably close to campus. (The Amiga group that I occasionally visited met in the "union south," which was immediately adjacent to all the engineering buildings.) > We had a few rooms of 029s (perhaps sixty). They were clean and very > bright, if littered with cards and chad. I only took one CS course > (well, I started a PDP-8 assembly course but got sick so dropped it). Wow... :-) When I returned for my master's at Oregon State here, I was a bit sad to see that within engineering HP calculators had gone from >90% to <33%! ---Joel
From: Joel Koltner on 18 Feb 2010 20:40
"Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com> wrote in message news:j0prn5phpc5d7h6lr7b9t0atqkqdedhbki(a)4ax.com... > My first 386 with a 387 co-processor cost me around $4K, and it was a > clone (~1987) The first PC I purchased was a 286, purchased around 1992 (so already pretty old), but for "only" $700 or so. I didn't purchase my next PC -- a 75MHz Pentium -- until something like 1997 or so. |