Overhead view of 74142 clock solderless breadboard

[@systemG3000]

Nice work, I know exactly how much effort it is to make a TTL clock

[@xlerb2286]

Is that old telephone cable wires you're using? That's what I used back in the day and it was great. Especially the nickel plated stuff. No troubles with poor connections due to oxidation with those wires, and they were a dream to solder for the same reason.

[@leroyjones6958]

Yes. The jumper wires are made from leftover cutoff ends from cable splices made within the wiring of my 200 line step-by-step office. The tinned 24 gauge solid wire works really great as solderless breadboard jumpers because it does not oxidize and corrode such as bare copper does. These make for a MUCH more reliable circuit constructed temporarily on solderless boards.

[@xlerb2286]

@@leroyjones6958 Oh yes indeed. In a box somewhere I've got a breadboarded Z80 system that used a CTC to do PWM to control lights that I built in the 80's. It used that tinned/plated wire. I bet those connections are still good. I should see if I could find that, I think it's somewhere in my parent's old house.