On Nov 27, 2:42 am, threeneurons <[email protected]> wrote: > When was the last time you bought a TV, and got the schematic with > it ? > They use to print them inside the chassis.
In about 1981 the company my brother and I had bought its first proper computer - a DEC PDP 11/34A (with the "Engineering Front Panel"). It came with a massive complete print set of schematics - the main CPU backplane was all wire-wrapped. As an EE student in the late 70s I also worked on a Modcomp MAX IV (rev D) and an (even then) ancient Honeywell DP 516 (also used as the backbone for ARPANET, the precursor to the Internet). Both of these were fully wirewrapped. On Nov 27, 12:33 am, Charles MacDonald <[email protected]> wrote: > Early consumer Circuit boards were on a paper based material and were > famous for developing cracks and lifted traces. This was no doubt > partly due to the repair guys being used to pressing down while using > their 300W Weller Soldering Guns. That would be "Paxolin" SRBP - Synthetic Resin Bonded Paper. A very very distinctive smell when it was hot/burning... Nick -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
