[cctalk] Re: oscilloscopes

Vintage computer enthusiasts might want to keep track of where to find CRT-based analog oscilloscopes, for use as output devices. The early MIT and Lincoln Labs computers used D/A converters to steer and activate the beam on analog scopes to draw vector images. Working on Whirlwind simulation,

Re: Seeking paper tape punch

hi Steve,   There's lots of raw material out there.  Al Kossow read hundreds of tapes a couple years ago, and posted the images at http://www.bitsavers.org/bits/MIT/whirlwind/X4222.2008_Whirlwind_ptp/   Whirlwind and modern readers disagree on what order the bits come in, but other than

Seeking paper tape punch

[apologies if this is a dup, but I didn't see it coming back in any of the cctalk digests] Greetings CC-Talk,   I've been working on a low-budget project to help to introduce students to history of computing through material we have from MIT's 1950's Whirlwind project.  The activity would

Re: punching paper tape

  Al K has read hundreds of these Whirlwind tapes using a standard 8-track optical reader, so I think we can confirm that it is punched with the common geometry, except one track narrower, with four bits on one side of the sprocket holes, and three bits on the other.   The tapes are for

Re: punching paper tape

gest a way to punch a seven track paper tape, I'm glad to give it a try!   And if we do end up with eight track tape, I'll be sure to add an attaboy for anyone else who notices!   Thanks! /guy On 3/26/2021 4:02 PM, Paul Koning wrote: > >> On Mar 26, 2021, at 3:31 PM, Guy Fedorkow vi

Re: punching paper tape

want?   Thanks! /guy ps,  You can see some of the work behind this at https://www.historia-mollimercium.com/whirlwind/ On 3/26/2021 3:16 PM, Eric Moore wrote: > I can easily punch and verify some tapes for you. > > -Eric > > On Fri, Mar 26, 2021 at 2:15 PM Guy Fedo

punching paper tape

Is there someone in North America that might be willing and able to help out a small historical display project by punching a few short paper tapes? I'm glad to try to accommodate whatever coding requirements are easiest. Thanks! /guy fedorkow fedor...@mit.edu

sun microsystem manuals

I have a small stack of Sun 3 Administrator, Networking and Diagnostic manuals, from about 1990.  Contact me if you think anyone would want them?   Thanks /guy fedorkow

Fwd: Sun 3/50

Thanks for the interest!  A number of folks responded, I've replied to the first responder, but of course I'll keep the next couple in line handy in case something happens.   /guy Forwarded Message Subject:Sun 3/50 Date: Sun, 17 Mar 2019 14:21:18 -0400 From: Guy

Sun 3/50

I have a Sun 3/50 diskless workstation in the Boston area, which I'd like to see go to a good home.  I no longer have the monochrome monitor that went with it, but I do have the original keyboard and mouse.  It hasn't been powered up in some time, but worked without problems until I took it out of

seeking punched-card reader in Boston area

Greetings CCtalk,   Does anyone in the Boston area know of a working 80-column punched-card reader?   I'm working with a researcher at Harvard who's come across some very interesting election polling data from the 1960 Kennedy-Nixon race, punched onto about 10,000 cards (five boxes).  That's too