The following is the recommended minimum system.
1 gigahertz (GHz) or faster processor.
Microsoft Windows XP, Windows Vista, Windows 7 or Windows 8 (either 32 or 64 bit). Note that for Windows 8 only the full version will work, that is the cut down "Windows 8 RT" is not sufficient.
1 gigabyte (GB) of RAM (2GB recommended for better performance).
24MB of available hard-disk space (10% free hard disk space is recommended for the Windows swap file).