mahesXtremeEngineering
Advanced Member level 4

Due to software limitations, that register width is usually a choice of 8, 16, 32 or 64 (no intermediate values). So a 32-bit OS is an OS written to run on a CPU with 32-bit wide registers, a 64-bit OS is written to run on a CPU with 64-bit wide registers.
How do I know if i have a 32 bit CPU or 64 bit CPU.