waashk/20ng huggingface dataset:
In article <1ra4hrINN3ni@DOLPHIN.ZOO.CS.YALE.EDU> stone-andy@cs.yale.edu (Andy Stone) writes: >Subject: Re: How to the disks copy protected. >	I wrote a commercial program called GAME-MAKER (can you guess what >it does).  What we do is have a document protect (answer Question on page x,  >line y), which is a real pain.  We also allow the user to register by sending >in a card, and computing a # based on their name.  The system works in that >we've gotten lots of registration cards. >	I hear that the program has been cracked though.  Someone two people  >actually called up my support--one with a question, the other wanting to >buy our graphics libraries (right!).  Anyway if anyone wants to help me >catch a cracker and has the cracked version, mail me.  I won't accuse >you (unless you're the cracker of course). >  I know of at least one ftp-site from which you can download the cracks of about any commercial game in existence. The names of the companies (yes, companies!) are also blatantly advertised with the crack codes. According to them, it is not illegal (at least in the USA, according to a statute or  something) to remove the copy protection from any program. The only condition is that you may only use this code on legally owned software for your own convenience.  If there is any interest I will download the advertisement of one such  company. I will not give the name of this ftp-site to anyone, even if only to protect the companies which wrote the original games.  DISCLAIMER: I do not condone the use or cracking of any programs. I believe  it hurts the industry and individuals in the long run.  On the subject of copy protection: Most pirates don't give a damn about  using software on which the name of the registered owner came up on starting  the program. They just don't have a conscience.
This is a followup post to something I've written previously.  Several people responded with good information, but I don't think I communicated  exactly what I am looking for. 	I'm working on a custom I/O device that will communicate with a host via RS-232.  My custom circuitry will use an 80C186EB or EC CPU and require about 64K of RAM (preferably FLASH RAM).  In looking around, I see that lots of people have engineered UART-CPU-ROM-RAM subsystems that are ready to be interfaced to your custom I/O devices.  It's been done so much, that it  would be best if I can avoid reinventing a system.  It just needs to use an 80C186 (or 188) CPU, and be able to load a program from the host then  transfer control to that program.  Well, there's one other thing the ROM needs to know how to do.  It should have routines to send and receive bytes to/from the host, that utilize the hardware control lines (DTR,RTS,DTS,CTS). Everything I've seen is in the $200.00 and up range.  That's too much for this application.  I need something around $100.00.  The CPU has the UART built-in, so you're only looking at a few chips.  Does anyone know a  company that markets a good board in this range, or some public domain  circuitry I can use?  Thanks in advance for the info.
In article <1993Apr15.100452.16793@csx.cciw.ca>, u009@csx.cciw.ca (G. Stewart Beal) writes: |> >	I was wondering if people had any good uses for old |> >256k SIMMs.  I have a bunch of them for the Apple Mac |> >and I know lots of other people do to.  I have tried to |> >sell them but have gotten NO interest.  We use them as Christmas tree decorations, the cat doesn't eat these.  --
In article <19930427.060713.357@almaden.ibm.com>, jmichael@vnet.IBM.COM writes: |> From: jmichael@vnet.IBM.COM |> Date: Tue, 27 Apr 93 09:00:18 EDT |> Subject: Re: solvent for duct-tape adhesive |> you are removing the goo, use pure grain alcohol :-). If the alcohol does |> not work try carbon tetrachloride. If neither of these work you may need to                 ^^^^^^^^^^^^^^^^^^^^  DO NOT HEAT THE CCL4 -- IT MAKES PHOSGENE GAS of WW-I poison gas fame  (remember when they used carbon tet in fire extinguishers?)   (yes, I know I was yelling)  --
idh@nessie.mcc.ac.uk (Ian Hawkins) writes:  >When constructing active filters,  odd values of resistor are often required  >(i.e. something like a 3.14 K Ohm resistor).(It seems best to choose common  >capacitor values and cope with the strange resistances then demanded).  >Is there a PD program out there that will work out how best to make up such >a resistance, given fixed resistors of the standard 12 values per decade?.(1, >1.2,1.5,1.8,2.2,3.3 etc ).  It is a common enough problem,  yet I cant  >recall seing a program that tells that Rx+Ry//Rz gives Rq,  starting with  >q and finding prefered values x,y and z.  I once wrote such a program (in BBC basic...) It was very crude, and took around 5 seconds to do an exhaustive search (with a small amount of  intelligence), and told you the best combination >Rq and the best below Rq.  If you want to write one, just store the prefered values in an array, and then search the solution space using three nested loops. I'm sure you could knock this up in an hour.  Christopher
clewis@ferret.ocunix.on.ca (Chris Lewis) writes:  > In article <1r1jmoINN8mb@rave.larc.nasa.gov> kludge@grissom.larc.nasa.gov (Sc > >In article <DRAND.93Apr20150701@spinner.osf.org> drand@spinner.osf.org (Doug > >>In article <randall.735251839@woof> randall@informix.com (Randall Rhea) wri >  > >>   Hams can legally run up to 1500 watts.  It is very unlikely, however, > >>   that a ham would be running that kind of power from a car.  Ham rigs >  > >>Not possible either.  You'd need about a 300 amp alternator for > >>just the amplifier.  I can just see it.  You need to slow > >>down on a downgrade,  so you hit the push to talk button. >  > >Now, that indeed is possible.  A good friend of mine is running about 1 KW > >PeP from his car.  Yes, he does have a second alternator.  Yes, he calls > >the rig an "electronic brake" since the engine noticeably slows when the > >key is down. >  > It has been a while since I knew the electronics of ham radio, but I seem > to remember that PeP is actually 4x the "real" power.  Which makes 1KW PeP > actually around 250W.  Or was it 2x?  I disremember. >  > "Effective transmitted power" is also "odd", in that it takes into account > antenna height and geometry.  Which is why a TV station with a 50KW Klystron > might advertise a megawatt (if their antenna is on the top of the > CN tower ;-). >  > This is like Sears HP ;-) >  > Though, 1500 real watts still isn't impossible.  About 125-150A with > a 12V alternator, less if the alternator produces higher voltages. >  > It's only three horsepower (taking into account inefficiencies).  You'll > feel it when you hit the key.  But not too much. > --  > Chris Lewis; clewis@ferret.ocunix.on.ca; Phone: Canada 613 832-0541 > Psroff 3.0 info: psroff-request@ferret.ocunix.on.ca > Ferret list: ferret-request@ferret.ocunix.on.ca   It sorta depends on what you drive. I remember running a two channel  Motorola with a vibrator power supply and about 40 tubes in a 1958  Volkwagen. The poor little 6 V generator had a heck of a time, and if you  keyed the mic at night, you needed to be stationary, because your lights  got AWFUL DIM. Isn't progress wonderful?
In article <MCHEN.93Apr22131702@terra.cs.psu.edu> mchen@terra.cs.psu.edu (Michael Chen) writes: >If companies compressed their executables with LZW andd did some kind of >encryption in the process, this "change two bytes here" thing would go right >out the window.  Not entirely true. A friend of mine was having trouble finishing the game GODS and asked me for help since he could not find a "trainer" (small patch that lets you play without losing lifes). The game is compressed but I did find *one* byte which when changed in the original *compressed* file would not affect the decompression and would also prevent the "shield" in the game from being tured off turning therefore making you invincible.  There are many other progs whose copy protection was defeated one way or another and I have seen examples of this with my own eyes. The copy protection schemes defeated were various such as using protected mode, compressed executables, progs that load and execute other progs (possibly compressed), dongles, key disks, etc...  I believe that persistence overcomes even the very best copy protection schemes.  >-- > Michael Chen			| From the depths of our most lucid horrors | >				| spring our fond hopes and pure desires... | > mchen@cs.psu.edu		| except what comes from HELL! :-) 7/23/92  |
Can you help me to understand how a CardPhone operates and  how the values are stored on the phonecard..
engp2254@nusunix1.nus.sg (SOH KAM YUNG) writes:  >I understand the need for a ground plane in a digital system. However, I >would like to know if such a ground plane is also necessary in an analog >system. > >(Note: this ground plane will not be connected, except at one point, to >the signal ground). > >I keep getting conflicting answers over this. Does having a ground plane >in an analog system help reduce noise also? My system only deals with >low frequency signals (up to 100Hz only!!!).  Well, one reason for getting conflicting answers is that it depends on what you want the ground plane to do.  A continuous conductor is a good  electrostatic shield.  Do you have signals on your board that need shielding rom other things?  This shielding won't do much good for magnetic fields, unless you make it continuous around the circuit to be shielded, like a Faraday cage.
In a previous article, ree88132@zach.fit.edu (Keith Ledig) writes: >I am looking for a text/reference that will include pinouts,  >description, and functionality for just about any IC made. ...  You can find cross reference to almost any IC or discrete semiconductor in  Philips ECG: Semiconductors Master Replacement Guide, ~$10. (Especially  industrial, commercial and entertainment, but not specialised or military.)
In article <C4z6x7.16B@murdoch.acc.Virginia.EDU>, dgj2y@kelvin.seas.Virginia.EDU (David Glen Jacobowitz) writes: > 	I've been wanting to build a Tesla coil for quite awhile now ( > who doesn't, right? ) and I thought it would be a good intermidiate > step to build a JAcob's Ladder first. > 	Well, I have been looking for a high voltage transformer that > is reasonable inexpensive ( neon sign transformers cost mucho ).   In the past I've managed to buy used neon sign transformers from sign shops  for about $20. Try calling around.
Robert G. Carpenter (rgc3679@bcstec.ca.boeing.com) wrote: : I'm wondering if it's possible to use radio waves to measure the : distance between a transmitter(s) and receiver? :  : Seems to me that you should be able to measure the signal strength : and determine distance. This would be for short distances (2000 ft), : and I would need to have accuracy of 6 inches, or so. : -------------------- You might try looking at whats available in laser locating systems. They work best for close work( 1 mile and under).  RF is used for much longer distances in two major modes. Transponder and phase measurment. Transponder requires you send a pulse to another station and it returns it to you and you measure the round trip time minus the receiver time.  Phase measurements require two or more transmitting stations sending the same frequency signal multiplexed in time. A receiver can pick them up and measure the phase shift between signals. Maps can be drawn that plot the Lines of Position that correspond to a certain phase shift between two stations.
In article <2775@snap> paj@uk.co.gec-mrc (Paul Johnson) writes: >This is vague, so I am posting it in case anyone else knows more. > >I recall reading of a phonograph which used mechanical amplification. >Compressed air was squirted out of a valve which was controlled by the >pickup.  The result was noisy and distinctly lo-fi, but much louder   NASA and related agencies apparently used this same principles to create the loudest reported reproduced sound. They used an "analog" electrically controlled valve to control the flow of air across a horn throat. If I  remember correctly it was called a "modulated air blast transducer". There were reports of the thing being able to produce 106 dB @ 80 Hz @ 10 mile distance, communicate directly with fighter pilots @ 5000 ft, etc.  Regards, Gordon.
In article <1993Apr6.203237.20841@eagle.lerc.nasa.gov>, fsset@bach.lerc.nasa.gov (Scott Townsend) writes: >I got a question from my dad which I really can't answer and I'd appreciate >some net.wisdom. > >His question is about some 18-24" diameter balls which are attached to >electric power lines in his area.  He's seen up to a half dozen between >two poles.  Neither of us have any experience with electric power distribution. >My only guess was that they may be a capacitive device to equalize the >inductance of the grid, but why so many between two poles?. > >Anyone know what they really are?  Is there a related FAQ for this? >Is there a better group to submit to? > >We'd both appreciate some enlightenment. >   The balls are used to reduce the amplitude of oscillations of the wire during periods of high winds.  I've seen what looks like paint cans filled with concrete used for the same purpose. Mike Behnke             | Senior Tech/Advisor | Quid est illuidin aqua?? Fermi Nat Accel Lab     | Equipment Suuport   | Batavia, Il.            | Computing Div       | PISTRIX!!  PISTRIX!! BEHNKE@FNALF.FNAL.GOV   |                     |  My opinions are my own, not of the lab. So, if you don't like them, call
musone@acsu.buffalo.edu (Mark J. Musone) writes:  > P.S. any REALLY GOOD BOOKS on AM/FM theory ALONG WITH DETAILED > ELECTRICAL DIAGRAMS would help a lot. > I have seen a lot of theory books with no circuits and a lot of > circuit books with no theory, but one without the other does not help.  Mixers have a wide variety of implementations; the Mini-Circuits part you mention is a doubly-balanced diode mixer, but active ones (BJT, FET) seem more popular in consumer receivers.  You might call MCL; they have a nice catalog.  The universal answer for wide-coverage, theory+practice, RF design is the _ARRL Handbook_, published by the American Radio Relay League, the radio amateur organization.  Any technical bookstore can order you one.  The book is superb, with lots of accessible theory, construction projects, and generally interesting stuff.  You might also check out _Solid State Design for the Radio Amateur_ (I think), by Hayward and <someone>.  This has sharper design and test information about subsystems like mixers.
I'm looking for brief information on new applications of electronics (or new electronics in applications.) If you know of any interesting new stuff, I would be intrested in hearing about it.
I'm wondering if it's possible to use radio waves to measure the distance between a transmitter(s) and receiver?  Seems to me that you should be able to measure the signal strength and determine distance. This would be for short distances (2000 ft), and I would need to have accuracy of 6 inches, or so.  How about measuring vertical distance as well, any chance - or am I getting ridiculous?  What frequencies would be best for this? Or does matter?  Sorry if I'm "mucking up" the network with one of those questions best answered by Bill Willis via US Mail... and I apologize for not being "tuned-in" to electronics. :-)
> > mahy comments deleted........ >  > RONG WRONG!!  Butane is used in a BUTANE lighter...Zippo's > use petroleum naptha and perfume.. > BTW...if you wanna find some benzene...take a look at > aerosol spray GUMOUT Carberetor Cleaner..that stuff will > take of the adhesive..and the paint and melt plastic and                                        ^^^^^^^^^^^^^^^ This doesn't melt plastic, at least it hasn't melted the plastic  bottle that I bought it in yet.  Maybe I'd better go check that bottle, its been sittin' awhile -:)
In article <1r7h1r$o7p@uniwa.uwa.edu.au> ascott@tartarus.uwa.edu.au (Andrew Scott) writes: >I would expect that CD-ROM software would not even need copy protection. >As the program on a CD-ROM would not fit onto a hard-drive, and it is >impossible for the average (and even not-so-average) user to write to a >CD-ROM, copies of the software (that still work) could never be made. > >Hmmm.. now that I think about it.. with a creative TSR, maybe >disk-swapping could be used to simulate files on a single disk. You >would need a tonne of disks though. > There are many programs on CD-ROM that fit on a harddisk, not all software  is that big (but we're getting there :-)).  ------------------------------------------------------------------------------- Guido Klemans  Internet: rcstage1@urc.tue.nl                  valid until 16 may 1993  -------------------------------------------------------------------------------  'Listen very carefully, I will say this only ones.'  Michelle of the resitance
I am looking at buying a low cost (< $500) scope for general purpose use. Any recommendations? Is this info in a faq somewhere? Any pointers appreciated. Thanks,   -Gerard.
In article <1rgka2$n4k@corax.udac.uu.se>, tde9106@hgs.se (Joakim Gunnarsson) writes: |>  |> >Two things to watch for: |> >In Germany (and I think the same holds for Sweden) only some |> >of the connections can handle tone dialing, so make sure the |> >phone can be set to pulse dialing. |> >In Sweden, the '0' is the first digit and all other digits |> >are pushed "down" by one position; this makes dialing (and |> >in the process converting numbers) an interesting task. |>   I think all connections in Norway can handle touchtone dialing.  |> Not to touchtone. |> Btw; Norway is even more interesting. They got both system! So you need different phones depending on where in the country you live. |>  The Oslo-region has one system, the rest of the country another system.  |> So you need different phones depending on where in the country you |> live. (Almost right for pulsdialing.) Some phones have a little switch inside, so you are able to use them all over Norway, or you can just renumber the numbers on your phone.
Distribution: usa Reply-To: lihan@ccwf.cc.utexas.edu  While I'm on the net bugging everyone, is there such a thing as a chip or chipset to decode Code 39 barcode?  I ask for a couple of reasons -- mainly I want a reasonably compact encoding scheme to write information on magstripe cards and Code 39 appears to be about right.  (If the 'right' way to do it is something else, and it's reasonably easy, can someone let me know?)  I might not get a chance to reply too quickly to this or my earlier post, but I'll get to them within a couple days, I think ..
We have a Sun CD-ROM drive which I would like to play audio CD's in. I have an old 10 watt amplifier which works fine when connected to a junk "Walkman" style AM/FM radio. This amp ties the common path of the earphone connection to ground.  However, it doesn't work with my Sony Walkman cassette player, or the CD drive, it produces of loud low-frequency tone. Obviously Sony doesn't ground the earphone output common. Does anyone have specs on the CD drive's  output? Will an audio transformer help? What are others using to play there CD's in the Sun drive so that more than one can listen?  Thanks for the help.
Can anyone offer a suggestion on a problem I am having? I have several boards whose sole purpose is to decode DTMF tones and send the resultant in ASCII to a PC.  These boards run on the serial interface. I need to run * of the boards somwehat simultaneously.  I need to be able to ho ok them up to a PC>  The problem is, how do I hook up 8+ serial devices to one PC inexpensivley, so that all can send data simulataneously (or close to it)? Any help would be greatly appreciated! Abhin Singla
In article <1qih53$9ho@usenet.INS.CWRU.Edu>, ae454@cleveland.Freenet.Edu  (Paul Simundza) writes: > My friend has a nice Alpine car stereo, and it only has 2 channels, > but one of them does not work. It does not put out any current or voltage > at all, is that channel therefore blown?  I then shut the radio off and > ran continuity into the two speaker ouputs of the channel, and it charged > and discharged so I know the wires just aint bad....   This probably only tells you that the DC blocking capacitor that's in series between the one-chip, single-ended audio amp and the speaker terminal is there.  > any Ideas?   Open it up and look for the power amp "ICs".  They'll be fairly obvious.  Replace the one connected to the dead output.   > also, > how would I locate where the signal of the radio/tape unit is BEFORE it > gets amplified, because then couldn't I hook up RCA outputs to that signal > so then he could just use a little amplifier?   Well, one thing you should do is poke around the terminals of the power amp chips.  Use a probe with a 10M resistor (like a scope probe) connected to the input of a small audio amp w/speaker.  If you find line-level input to both chips, one of the chips is bad and can probably replaced pretty easily.    If you want to pick off a near-line-level signal, suitable for feeding to an outboard amp, the outer legs of the volume control pot will often be good enough.  This is *before* the volume control (and usually before the tone and balance controls too).  If you take off from the center and ground legs of the volume pot, this will be after the volume control (but again, probably  before the other controls).    If the unit is a modern type with an electronic volume control chip, you should probably forget the whole thing.
I would like to modulate a 40KHz squarewave over rf. This is for a rf remote control project. The squarewave has a high of 5 v and low of 0v.  thanks.  tron
In article <1993Apr22.135517.5897@r-node.hub.org> wayne@r-node.hub.org (Wayne Dawe) writes: >Two or three years ago I saw a report on TV about a company that had  >developed a method of making solar cells on a flexible substrate. My >failing memory has convinced me it was some flexible metal. I now have >an application that requires a flexible solar cell and was hoping someone >out in netland knows something about this company or a similar product. >Any help would be greatly appreciated. >--  >Wayne Dawe                    (pick a path, any path but don't send me >wayne@r-node.hub.org           anything bigger than 15K) >wayne@r-node.gts.org   wayne@r-node.pci.on.ca     wayne@r-node.UUCP  Wayne:  Look for these advertised in sailboat supplies catalogs and sail-related magazines (eg. SAIL ...).
I've recently picked up some TIL311 display chips, but I can't find any information on them.  It seems they are no longer made by TI, and I don't have an old enough data book.  :-(  It appears to have a dot-matrix led display capable of showing one hex digit.  It is in a 14 pin DIP package, but pins 6, 9, and 11 are not present.  If you have any information on this part (pinout, power requirments, functions, ...) please send me e-mail.  Thank You,
Hello, I'm looking for information on Alphanumeric pagers  and *how* the data is sent from the paging transmitter and how  I would go about building a device to decode the paging data  (like my pager does) and feed it though an RS232 port.     I'm planning on seperating different paging messages and  different pagers in software to keep amount of hardware I need  down....  Does anyone know what chips (Motorola?) are good for  decoding Numeric and Alphanumeric paging data (and then stuffing it down an RS232 port (basically any baud rate is fine!) ?      (I already have a radio reciever with headphone level  output for the audio signal from the paging tower, but I'd be  interested in anything you know about pagers, including the  type of radio recievers they use!)     Thanks in advance!             -theo EMAIL = theo@walt.caps.maine.edu
They detect the oscillator operating in the detector. Saw a story about their use in Canada. Now don't go putting oscillators in your cars... :-)
Howdy chaps  Has anybody got any pointers to good C, Pascal, etc compilers for  microcontrollers, shareware or otherwise ?  My specific need is for 8051 C, but if the responses are many and varied I  will post a summary.  Cheers Mike