This is how Ericsson company did wire wrapping in the 80s.



I recycled one of the boards to make my 4 bit TTL CPU.

Allen

 

I worked on a system that had all wire wrapped magnetic core memory. I loved that system. Others used volatile memory (conventional pcb) . After a power failure I would have to reload from magnetic tape as the battery backup rarely did its job. It took 30 minutes to load the code and database. The load would often crash which required I start all over again.

With the magnetic core system all I had to do was start the code at a given address and things were up and running in minutes.

All of those systems had 2 other boards that were all wire wrapped with a couple of dozen chips. The board posted above were very similar to what I worked on with the exception they had edge connectors.

 

These days you have to use all the techniques together to build functional prototypes.

I end up using perf board, wire wrap, SMD Surf Boards, point-to-point, copper shielding tape, teflon tubing, bits of PCB with traces scratched in using an exacto blade ground like a laminate cutter. Here is a good example of how it all works together, combining all the techniques to quickly build functional hardware.

 

Hunt around for some Augat wire-wrap prototyping boards.

 

Hunt around for some Augat wire-wrap prototyping boards.

btw, is this what you mentioned earlier?

 

When you are wiring multiple buses such as encountered in microcontroller experimentation, breadboarding becomes painful.

There are three options (almost all obsolete) that I have used successfully in the past.

1) wire-wrapping, if you can locate wire-wrap DIP sockets

2) Scotch-3M IDC breadboarding system (I have to look up the correct terminology) - which is probably impossible to source. This, by far, is the most efficient breadboarding technique. You simple run wire-wrap wire to each connection point and press it in. It allows you to lay continuous runs of a signal wire.

3) Using special wire insulated with a thermo-plastic coating. You simply wire from point-to-point using your soldering iron. The heat from the soldering iron melts the plastic coating and solders the end of the wire to the solder pad. As above, you can lay continuous runs of one signal without having to cut the wire.

Follow up from my post #20:

1) Wire-wrap sockets are available on eBay.

2) The system was called 3M Scotchflex.

http://www.princeton.edu/~mae412/TEXT/NTRAK2002/229-232.pdf

3) Polyurethane enamel coated copper wire or UEW.
Search for Vector P173 Wiring Pencil.
https://en.wikipedia.org/wiki/Wiring_pencil

 

Small project, no WW sockets, then might try dead bug style where ICs glued upside down & connections made with WW . Do need drawing to identify ICs & orientation.

 

getting 10 for $15 on aliexpress

For that price, you'll be getting counterfeit parts. If you're lucky, they might work (sort of).

 

Sayal sucks...I got 2 eeproms AT28c256 for I think $25 or $35 each...getting 10 for $15 on aliexpress

You should consider yourself very lucky to have such a shop nearby. Who in the world wants to wait weeks to have a product shipped in from China just to save a dollar or two?