In my comments on RFC-32 I go on a digression about how much I love the 555 timer integrated circuit chip. Also, computer clock nerds, please check my work and make sure I did the right calculations and estimates. I'm not so fluent in this stuff.
https://write.as/365-rfcs/rfc-32
You can follow along with my series commenting on the first 365 RFCs here @365-rfcs