In article ,
Jim Thompson writes:
I'd like to conjure up a random bit generator.

Just feed it a clock and have it generate random bits.

74HC... components preferred... I have most everything in that family
in my parts bin ;-)

Do you want real random or just pseudo random?

If pseudo random is good enough, google for LFSR. With the right
polynomial, you get a random sequence of (2^N)-1 bits. There are
tables of polynomials that do that. Some of them need only 1 XOR
gate.

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These are my opinions, not necessarily my employer's. I hate spam.