The first versions of ASCII used 7-bit codes, which meant they could attach a character to every binary number between 0000000 ... languages like C++, C#, Python, and JavaScript.

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 ...

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, but ...