How machine language works?

Question

Why computer and device understand 0 and 1?
Why not A and B?
Why?

Answer 1

as you said machine , which has no brain to know or understand letters and words , its made all from electronics working as switches if its on mean 1 if off mean 0 so consider millions of these switches with some other electronics elements will translate the 0 and 1 to other higher level languages such as c, c++-or java .. etc

Answer 2

Over complexed 🐓

Answer 3

The fact that 0 is a zero and 1 is a one is kind of irrelevant. A computer consists of millions and millions of "on and off" switches. On switches allow an electrical current to pass through, off switches do not all an electrical current to pass through. 0 indicates that a specific switch is off, 1 indicates that a specific switch is on.

Answer 4

computer runes on electricity ,it only known to the voltage changes ,to represent voltage we use 0 and 1 , thus thay say computer only know 0 and 1.