Difference between a 8 bit microprocessor and 64-bit microprocessor?

Answer:
It is depended on how many bits the processor can process simultaneous...

Means 8 bit microprocessor can process 8 bit of data simultaneously...
& also it has 8 line data bus.. to transfer the data between memory & IO devices....

In same way for 64 bit..
First answer by MadhavSuthar. Last edit by MadhavSuthar. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].