Hi:

IEEE Spectrum has a nice article "Re-creating the First Flip-Flop”, sub-titled "The fundamental building block of modern digital design turns 100”.

See https://spectrum.ieee.org/geek-life/hands-on/recreating-the-first-flipflop

Cheers

Brian Randell

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School of Computing Science, Newcastle University, Newcastle upon Tyne, NE1 7RU
EMAIL = Brian.Randell@ncl.ac.uk   PHONE = +44 191 208 7923
URL = http://www.ncl.ac.uk/computing/people/profile/brianrandell.html