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| 8/17/2016
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Posted on 08/17/2016 10:29:43 AM PDT by zeugma
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To: Gaffer
Just a useless fact now. Not to me. I measure intermodulation, albeit at very very much higher frequencies! When you 'mix' two frequencies, audio, HF, RF or microwave, or even light, you get the two originals plus their 'sum' and their 'difference'....................
61
posted on
08/17/2016 11:14:27 AM PDT
by
Red Badger
(Make America AMERICA again!.........................)
To: NorthMountain
Yeah, the files are on my Linux desktop, which is where I was digging through some of my old archives, hence the unix-like listing. Is this better?
05/13/1998 11:23a 254 BEEP.COM
03/11/1995 10:30p 56 BEEP.SCR
12/22/1991 01:56p 17 COLD.COM
02/13/1996 05:53p 94 COLD.SCR
12/06/1992 08:25p 24 KEY.COM
12/22/1991 01:56p 17 WARM.COM
02/13/1996 05:54p 94 WARM.SCR
62
posted on
08/17/2016 11:15:01 AM PDT
by
zeugma
(Welcome to the "interesting times" you were warned about.)
To: Gaffer
It is damned difficult to find the means to read and rewrite whats on a ring core memory in this millennium.... believe me, Ive tried. Ended up assuring the enire system worked (unpowered at that) before recording the output. The technology just isnt there any more. You have piqued my interests. About a month ago I was looking at ring core memory on Ebay with a mind to get one and make it work.
Those rings are not ordinary ferrite. They are a special type of ferrite that has very strong hysteresis characteristics.
But what I am wondering is why you might be interested in making magnetic core memories work?
63
posted on
08/17/2016 11:15:14 AM PDT
by
DiogenesLamp
("of parents owing allegiance to no other sovereignty.")
To: DouglasKC
An earlier Freeper had it right. A read wire and a re-write wire and one to blank it. Once you read it, you had to rewrite to it to keep the state.
64
posted on
08/17/2016 11:15:27 AM PDT
by
Gaffer
To: NorthMountain
Yes it was!.................
65
posted on
08/17/2016 11:15:52 AM PDT
by
Red Badger
(Make America AMERICA again!.........................)
To: umgud
I started with a Commodore 64. I had one of those, plus a Timex 1000, and a "Trash 80". :-)
66
posted on
08/17/2016 11:17:19 AM PDT
by
COBOL2Java
(Donald Trump, warts and all, is not a public enemy. The Golems in the GOP are stasis and apathy)
To: DiogenesLamp
I cannot tell you why, actually. The only thing I can say is wondering about what is contained in the technology of equipment from days of yesteryear. Sorry.
67
posted on
08/17/2016 11:17:35 AM PDT
by
Gaffer
To: Red Badger
At home I was a DOS and TRS 80 guy. At work I was a UNIX nerd...
68
posted on
08/17/2016 11:19:19 AM PDT
by
COBOL2Java
(Donald Trump, warts and all, is not a public enemy. The Golems in the GOP are stasis and apathy)
To: ShadowAce
pfftt. I was writing code in the late 70s. Much like you, I also used programs printed in magazines. I was too, but it was mostly assembly. (And a little bit of basic on the new TRS-80.)
69
posted on
08/17/2016 11:19:32 AM PDT
by
DiogenesLamp
("of parents owing allegiance to no other sovereignty.")
To: Mr. K
That’s the way of most if not all ‘industry’ type magazines.....................
70
posted on
08/17/2016 11:19:34 AM PDT
by
Red Badger
(Make America AMERICA again!.........................)
To: Red Badger
DOS was where the REAL computer guys worked! Only because we couldn't afford a PDP11 as our home PC. I was actually working with HP-3000 minicomputers back then. I worked mainframes and minis years before I even saw a PC. I wanted to bring a HP3000/70 home. The heat it put off would be great during winter. Not so good during the summer.
71
posted on
08/17/2016 11:19:36 AM PDT
by
zeugma
(Welcome to the "interesting times" you were warned about.)
To: umgud
I started with a Commodore 64.Yeah, me too. Had a lot of fun with my two sons typing in game programs from Commodore magazine.
72
posted on
08/17/2016 11:19:45 AM PDT
by
oh8eleven
(RVN '67-'68)
To: Red Badger
Most certainly but the most fascinating fact is that the human ear is a wonderful mixer and it automatically selects, emphasizes, etc. the lowest frequency product.
Fascinating in my book.
When I learned this I said “bullshit”....I actually took two oscillators and speakers at the frequencies mentioned and I padded them into a summing pad. The dial tone appeared and I was a believer.
73
posted on
08/17/2016 11:21:02 AM PDT
by
Gaffer
To: DiogenesLamp
yeah. We had the TRS-80 Model I with 16K of memory and a cassette drive.
74
posted on
08/17/2016 11:22:06 AM PDT
by
ShadowAce
(Linux - The Ultimate Windows Service Pack)
To: InterceptPoint
I used X-Tree!.............
75
posted on
08/17/2016 11:22:07 AM PDT
by
Red Badger
(Make America AMERICA again!.........................)
To: Gaffer
It’s mathematics!..............
76
posted on
08/17/2016 11:23:28 AM PDT
by
Red Badger
(Make America AMERICA again!.........................)
To: umgud; Red Badger
Wow, yer old Hey!
77
posted on
08/17/2016 11:23:53 AM PDT
by
COBOL2Java
(Donald Trump, warts and all, is not a public enemy. The Golems in the GOP are stasis and apathy)
To: Gaffer
Sheet, I thought we wuz talking old timer crap here. I remember sending and receiving emails over a Model 204 to someone in Arizona in 1989.... DOS my patootie.... Well, in my defense, I was talking specifically about some stuff I'd found when trying to find some old BBS stuff from my archives. (I'm actually looking for the original Clinton Body Count file) I don't have many archives from the various minis and mainframes I worked back in day. Not that I can still read anyway.
78
posted on
08/17/2016 11:24:31 AM PDT
by
zeugma
(Welcome to the "interesting times" you were warned about.)
To: Gaffer
Understood but it is a wonderful byproduct that he human ear suppresses the two higher tones and selects the lowest product, n’est pas?
79
posted on
08/17/2016 11:24:41 AM PDT
by
Gaffer
To: DouglasKC
I remember writing programs in Turbo Pascal
I did a few in my time. Borland had some great programs.
I used their Paradox database on more than one project.
80
posted on
08/17/2016 11:26:45 AM PDT
by
oh8eleven
(RVN '67-'68)
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