Yes, because computers work in zeros and ones and we use that first bit 0 in the base 2 system to define 0 like Spikey shows above.
1 byte = 8 combined bits of 0 or 1 (when you fill the bit with a 1 you gotta move on to the next bit, hence the base 2 system, you get 2 values to work with in each place whereas the base 10 system we get 0 through 9 to work with or 10 options before moving to the 10’s place and so on and so on) which gives 2^8 combinations (256 combinations) or values ranging from 0-255……unless you go negative then it is -1 to -256 in most cases that I am aware of.
0000 0000
Even the PLC’s that control the turbines at my work use this concept.