How do you see how many operating systems you have?

  

The old 98 system is compatible with 16 and 32 bits, win2000 and XP systems are 32-bit, but XP also has 64-bit, vista system has 32 and 64 distinctions,

starts- Run DXDIAG and try it out. Start/Run, enter CMD in the running dialog box and press Enter. Enter the DOS window, then enter systeminfo and press Enter. Then display a series of code files. There is a system type. If it is X86. It is a 32-bit system. If it is X64, it is a 64-bit system.

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