Small Binary Clock
This application allows you to place a small icon in the menu bar that will show the time in binary code. You can choose a color that you like and customize the display of seconds. With it, you will feel like a geek.
How to open the application automatically when you log in:
https://support.apple.com/kb/PH18881
How to read a binary clock:
https://en.wikipedia.org/wiki/Binary_clock
