What numbering format is the basis for digital electronic circuitry?

is it decimal? octal? binary or BCD?What numbering format is the basis for digital electronic circuitry?
metric, decimal for normal design.





Logic circuitry and computer circuitry uses an implicit binary format, usually expressed as octal (base 8) or hexadecimal (base 16) format.What numbering format is the basis for digital electronic circuitry?
Binary, and remember, there are only 10 types of people in the world. Those who understand binary and those who don't.