Piggybacking 74LS logic chips to confirm a suspected fault

[tony duell]

> 
> One recalls those execrable low-profile cheap sockets from TI in the
> early 70s.  Horrible stuff.

Those were about the worst!

> Aren't in fact, all wirewrap (board+pin) board sockets machine-pin?  I
> don't recall seeing one that wasn't.  Given the great track record of
> wire-wrapped designs that says something, surely.

I have certainly seen, and may even still have, some formed-pin
(i.e. not turned pin) wire-wrap DIL sockets. I have no intention of
every using them though!

-tony