Probably says something about me that my immediate reaction to the number 65536 wasn’t 2^16, but rather the frequency of the timer crystal you had to swap into a Radio Shack tone dialer to make a “red box”[1] that would let you make free phone calls on US pay phones by simulating the analog coin code sound of a quarter being deposited. Fun fact that the “red box” was the first hackaday article[2] posted way back in 2004. I learned about this back in the days of 2600 magazine. Fun stuff!

[1] http://www.techfreakz.org/2600faq.html#redbox

[2] https://hackaday.com/2004/09/05/radioshack-phone-dialer-red-...