Binary code is ... all the numbers in existence, the binary counting system uses zeros and ones to express these same numbers. Our usual system is called decimal, or base 10, and counts in chunks ...

Binary and hexadecimal numbers systems underpin the way modern computer systems work. Low-level interactions with hexadecimal (hex) and binary are uncommon in the world of Java programming ...

Python makes a pretty nice interactive calculator. You can do the other way around, too, with the builtin function bin(x). (And there are also hex() and oct() builtins, if you also need to go back ...