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DEC Computer Lab Workbook

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    DEC Computer Lab Workbook

    I bought a book called Digital Computer Lab Workbook (see photo). Does anybody know about the piece of hardware shown on the cover? PDP-8's are pretty rare in Belgium, but I have never even seen this thing before.

    As far as I understood from reading a few pages in the book, it should be mainly a patchpanel with a number of logic gates but with some extras like clock generators. I don't know what the switches at the bottom do.

    Does anyone have the pdf version of the book btw? I know from previous experience that pages tend to get loose in these DEC-books when you open them too often. Apparently they aren't made to last 40 years

    dec-clw-1.jpg

    #2
    It is simply a "DEC Computer Lab". It was a tool to teach digital logic. In the background on the right is a PDP-8/s and in the background it looks like a PDP-6.

    http://www.phpbb.com/customise/db/mo...ost_revisions/

    I could not find a PDF of it
    Looking for: anything from SGI or DEC/digital
    Pictures of my collection: www.pdp8.se

    Comment


      #3
      H500 Computer Lab

      Originally posted by BrunoD View Post
      I bought a book called Digital Computer Lab Workbook (see photo). Does anybody know about the piece of hardware shown on the cover? PDP-8's are pretty rare in Belgium, but I have never even seen this thing before.
      I believe that is called an H500 Computer Lab. I've got one . Here's a link to a description on the web: http://www.decodesystems.com/dec-clw.html

      Originally posted by BrunoD View Post
      As far as I understood from reading a few pages in the book, it should be mainly a patchpanel with a number of logic gates but with some extras like clock generators. I don't know what the switches at the bottom do.
      The switches are just switches. They generate a "0" or "1" output depending on the orientation of the rocker switch. Three of them are momentary and generate timed pulses. There is a companion set of bulbs, which light when driven with a "1".

      Originally posted by BrunoD View Post
      Does anyone have the pdf version of the book btw? I know from previous experience that pages tend to get loose in these DEC-books when you open them too often. Apparently they aren't made to last 40 years
      [ATTACH]5454[/ATTACH]
      I have PDF versions of both the Workbook and the Teacher's Guide, which is the companion volume for the instructor. Checking my email, I find that the Workbook PDF originated with B. Watzman, and IIRC the teacher's guide is a scan of A. Carder's Xerox copy.

      What I'm missing is information about the patch cords -- how many of each color make a complete set? And of course, I'm also missing a bunch of the actual patch cords. (The brass taper pins to make new patch cords are not easy to find, either.)

      Vince

      Comment


        #4
        Ah, so that's what this auction on ebay is (ends in a day and a half)- it's a DEC Computer Lab: http://cgi.ebay.com/ws/eBayISAPI.dll...m=140528692902

        It's not mine, I saw it when looking for old DEC stuff on ebay and I added it to my list since it looked interesting.

        Comment


          #5
          Hi, I'm looking for the Workbook and the Teacher's guide, printed and/or as .pdf. Please contact me via pm. Greetings from Germany Thorsten

          Comment


            #6
            Hello folks...I am also looking for a PDF of the workbook, I acquired one of these H-500 labs and hope to interface it with an analog sequencer to control a modular synthesizer...it would be most helpful to get some tips from the workbook on setting up interesting Boolean operations. Any help would be most appreciated!

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              #7
              Just in case anyone's interested, I was able to get my H-500 set up as a binary counter (7-bit)...still working after over 40 years...http://www.youtube.com/watch?v=kuNsK_IWC2I

              Once again, if anyone has access to a PDF of the workbook, I would be most appreciative...I'm just scratching the surface with this thing due to my rudimentary knowledge of Boolean logic...

              Comment


                #8
                DEC Computer Lab Teache's guide

                Hello,
                i'm looking after the DEC Computer Lab Teacher's guide in PDF.
                Can someone email me for it.
                Thanks

                Comment


                  #9
                  Originally posted by ordins View Post
                  Hello,
                  i'm looking after the DEC Computer Lab Teacher's guide in PDF.
                  Can someone email me for it.
                  Thanks
                  Have a look here:
                  http://www.so-much-stuff.com/pdp8/pdf/

                  Vince

                  Comment


                    #10
                    Hi all,

                    There is one of the DEC-H500 computer labs on ebay usa right now.

                    Much as I would love to get this, right now I simply cannot afford it.

                    http://www.ebay.com/itm/Rare-Digital.../141795969926?

                    What with the lousy us$ to aus$ exchange rate and the over the roof shipping costs, now that most goes air, rather than sea.

                    Comment


                      #11
                      Mine...
                      http://imgur.com/a/99Z2M
                      https://www.youtube.com/watch?v=VjLOeJsFyYQ
                      blog on restoration coming...
                      http://abitoutofplace.wordpress.com/

                      Comment


                        #12
                        I have one of these - picked up at a Trash and Treasure at MIT when I was living and working in the USA (NH). I have relocated back to Australia, so am looking for details on the electronics (power supply etc) as I would like to refurb it to 250V50Hz instead of the 110V60Hz. Also don't have any of the jumper cables - does anyone have specs on the pins/connectors/cable gauges/lengths. ?

                        Comment


                          #13
                          Originally posted by pquodling View Post
                          I have one of these - picked up at a Trash and Treasure at MIT when I was living and working in the USA (NH). I have relocated back to Australia, so am looking for details on the electronics (power supply etc) as I would like to refurb it to 250V50Hz instead of the 110V60Hz. Also don't have any of the jumper cables - does anyone have specs on the pins/connectors/cable gauges/lengths. ?
                          If you open the unit, the transformer has 2 sets of primary windings (at least mine had), just make them from parallel to serial and you can run it on 220V
                          I don't think the frequency is really an issue.

                          Comment


                            #14
                            Has anyone found some affordable patch cables or just the plugs for these DEC H500 Computer Labs?
                            The original had taper pins, but I would much prefer banana plug style connectors with soft silicon rubber coated wires.
                            Does anyone know what cable lengths were supplied with the H500?

                            Thanks
                            Tom
                            Last edited by thunter0512; November 29, 2021, 07:36 AM.
                            WTB:
                            • TU56 tape drive and TD8E controller and cables for PDP-8/E.
                            • Working MM8EJ core memory board set for PDP-8/E.

                            Comment

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