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i bought a disk in thailand that contained various desktop calculators including an rpn one
when i put the disc in all the calcs came up as rar files, how do i open them, has anyone tried these


RAR is a file compression formaty similar to ZIP. It was developed by RARLABS.

See following Links which describe the format and have links to some decompressor programs:

RAR (file format)

RARLAB, home of WinRAR and RAR archivers



Rar is just another compression format.

To unrar your stuff, just do the following:

- if you have a Mac under OS X : double click on the archive and it will unrar/mount on the desktop.

- if you have something else : download a freeware decompression tool/plug in
from here. [Courtesy Rarlabs]


The free utility 7-zip can manage various compression formats including RAR. Click here to download 7-zip.