I worked 13 years for the french subsidiary of Control Data Corp.
I too did see the first memory "boards", matrix of thin wires and ferrite beads (tores ??) ...
And the huge hard disks... I think that was the 844 disk drive..... Older coworkers have kept those disk plates, to make tea tables .....(well... they don't drink tea, rather something stronger ... but that's not the point .... <img src="images/graemlins/smile.gif" alt="" />

At that time, you used a scope to troubleshoot the machine .... now you just replace it !!


Alain