test-drb July 2003

test-drb@ccmp.vtda.org

279 participants
450 discussions

by jpl15＠panix.com

For any interested Classiccmpers in the Southwest - the annual Ft. Thuthill ham swap is coming up at the end of this month - July 25th, 26th, 2th in Flagstaff, AZ at the Fort Tuthill Rec Area. This is large, well-attended meet with an outdoor area and also indoor vendor sales. Camping and RV spaces are available on-site. Sunday (27th) is the Auction, where all the stuff you didn't want to buy the first three times is auctioned off to the highest bidder - a real, show-of-hands type auction. E-mail me off list for more info - I'll be there with Marvin Johnston. Cheerz John

21 years

NeXT monitor cables and stuff

by wpointon＠earthlink.net

hey gang - i hope exeryones doing well -- im in need of some next stuff to get a couple systems running - 1 - a video/sound y cable to connect a color nextstation to a soundbox and a color monitor 2 - the 3-bnc adaptor that goes on the monitor end of the y cable if youre not using a next monitor 3 - a mono video cable to connect a mono nextstation to a mono monitor 4 - also i need 2 next keyboards (non adb) 5 - ??? - i would really like to find a copy of openstep 4,2 mach or nextstep 3.3 ------- thanks a bunch and please reply off list --- billp

21 years

1970's digitizer tablets

by pete＠dunnington.u-net.com

On Jul 14, 11:53, Fred Cisin wrote: > What about an under $10 one for a MICROCOMPUTER/PERSONAL COMPUTER? > I will lay claim to the dubious honor of inventing that. (even though > it was so obvious that MANY people must have done so) > In 1983, I wanted a digitizer for blackboards. As a "proof of > concept", I attached a one foot long piece of clear plastic (a > ruler) to the shaft of a potentiometer. At the other end of it > I attached another potentiometer, with another foot long piece > of clear plastic attached to the shaft of that one. That made > for an upper arm hinged at the edge of the board with a > potentiometer, and a forearm hinged at the end of that with a > potentiometer at the "elbow". There was a very similar device around in the early 1980s; I can't remember what it was called but it hooked up to one of the machines at the college I worked in then, so it must have been for a BBC Micro (around 1983) or an Apple ][ or PET (about 1982). Its operational area was about an A4 sheet. -- Pete Peter Turnbull Network Manager University of York

21 years

Can anyone id these HP ICs? (Joe)

by rigdonj＠cfl.rr.com

Bingo! You're right. It's part number is 05370-60022. I had tried to look up that number but all I found was a scanner with the same PN. Do you have a service manual for this? If so, can you tell me what these parts are? PNs 1820-0753, 1820-2000 and 1820-1999. Joe At 10:55 AM 7/15/03 -0700, you wrote: >Hi Joe, > >Your board looks like one of the interpolator cards from an HP 5370A Universal Time Interval Counter. Do you see an "05370-6xxxx" part number on the board anywhere? > > >Message: 14 >Date: Mon, 14 Jul 2003 17:52:26 >To: cctalk(a)classiccmp.org >From: Joe <rigdonj(a)cfl.rr.com> >Subject: Re: Can anyone id these HP ICs? >Reply-To: cctalk(a)classiccmp.org > >Hi Ed, > > I posted a picture at ><http://home.cfl.rr.com/rigdon14/t-bird/hp-ic.jpg>. >I unplugged the two ICs in the top RH corner and turned them over so that >you can see the bottom and side of the ICs and the heat sink that the IC >normally sits on. There is a depression in the bottom of the IC case and a >rasied pad on the heatsink that fits into the depression. I've never seen >anything like this before! Note the delay line (?) on the LH side of the >card. Sorry I couldn't get a better picture. This is as close as I could >get with my camera. > > Joe

21 years

Can anyone id these HP ICs? (Joe)

by swperk＠earthlink.net

Hi Joe, Your board looks like one of the interpolator cards from an HP 5370A Universal Time Interval Counter. Do you see an "05370-6xxxx" part number on the board anywhere? Message: 14 Date: Mon, 14 Jul 2003 17:52:26 To: cctalk(a)classiccmp.org From: Joe <rigdonj(a)cfl.rr.com> Subject: Re: Can anyone id these HP ICs? Reply-To: cctalk(a)classiccmp.org Hi Ed, I posted a picture at <http://home.cfl.rr.com/rigdon14/t-bird/hp-ic.jpg>. I unplugged the two ICs in the top RH corner and turned them over so that you can see the bottom and side of the ICs and the heat sink that the IC normally sits on. There is a depression in the bottom of the IC case and a rasied pad on the heatsink that fits into the depression. I've never seen anything like this before! Note the delay line (?) on the LH side of the card. Sorry I couldn't get a better picture. This is as close as I could get with my camera. Joe

21 years

TIFF to PDF (slightly OT, but for a good

by dfnr2＠yahoo.com

> Image magick does conversions very nicely, but > AFAICT it won't handle combining multiple tiffs into a > single document. > > Doc Actually, it does this very well: To convert a bunch of TIFF files to a single PDF, try the '-adjoing' option to the imagemagick utility "convert": convert -geometry 1600x1200 -colors 32 -colorspace yuv -adjoin *.tiff Similar for jpegs, etc. Dave

21 years

1970's digitizer tablets

by Robert_Feldman＠jdedwards.com

There were plans published in BYTE (IIRC) for just such a digitizer. I don't remember the issue, but the time frome would have been early 1980's. Bob -----Original Message----- From: Fred Cisin [mailto:cisin@xenosoft.com] Sent: Monday, July 14, 2003 1:53 PM To: cctalk(a)classiccmp.org Subject: RE:1970's digitizer tablets <snip> What about an under $10 one for a MICROCOMPUTER/PERSONAL COMPUTER? I will lay claim to the dubious honor of inventing that. (even though it was so obvious that MANY people must have done so) In 1983, I wanted a digitizer for blackboards. As a "proof of concept", I attached a one foot long piece of clear plastic (a ruler) to the shaft of a potentiometer. At the other end of it I attached another potentiometer, with another foot long piece of clear plastic attached to the shaft of that one. That made for an upper arm hinged at the edge of the board with a potentiometer, and a forearm hinged at the end of that with a potentiometer at the "elbow". <snip> -- Grumpy Ol' Fred cisin(a)xenosoft.com

21 years

Can anyone id these HP ICs?

by rigdonj＠cfl.rr.com

Picked up an HP circuit card today with some NEAT looking ICs. The ICs are 16 pin DIP packages but are made entirely of gold and ceramic. They have a gold bottom plate then a layer of white ceramic with what appears to be a gold ring around the top then a gold lid soldered to that. The legs are also all gold. They sit on gold plates that are slightly smalled than the ICs and the plates have a single leg coming off of each end that is soldered to the circuit board. The IC legs don't even mount in regular IC sockets instead there is a gold leaf terminal for each leg. I've never seen that type of terminals used for ICs before but HP does use them for individual wires in some of their products. The wires to the card readers in the HP-67 and HP-41 card readers are connected that way. I have no idea what this card came out of other than it's made by HP. The part number that's on it doesn't help id it either. There are 12 of these strange looking ICs on the card. They have HP logos and all the part number 1820-2000, 1820-1999 or 1820-0753. I've searched the net for those numbers and checked the on-line HP part number cross references but didn't find anything. However the 1820 prefix usually indicates that the part uses TTL levels. Any ideas? Joe

21 years

impossible 7482's

by charlesmorris＠direcway.com

On Sun, 13 Jul 2003 21:42:14 -0500, you wrote: >> that going. Oh, and a 7482 adder, which was impossible to find [1]... >> >> [1] I do mean _impossible_. I ended up using part of a 7483 that I stuck >> to the flip-chip PCB dead-bug style and wired to the holes where the >> 7482 should have been. Runs fine... > >You know what happens when someone says impossible... http://www.mouser.com/index.cfm?handler=displayproduct&&lstdispproductid=25… As of today, they have 426 in stock for $2.70 each... it wasn't impossible 6 mo. ago either when I needed one on an M220 card. Am I overlooking something? -Charles

21 years

FA: Prototype Rockwell ICs, '55 T-Bird manuals, Sun/Solaris, AIM-65, PDP-8, Tektronix manuals

by rigdonj＠cfl.rr.com

FA: Prototype Rockwell ICs, '55 - '56 T-Bird manuals, Sun/Solaris, AIM-65, PDP-8, Tektronix, Mostek Z-80 manuals and three new S-100 sockets. Just listed a whole passle of stuff on E-bay. See <http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=rigdonj>

21 years

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test-drb July 2003