22 Feb
2005
22 Feb
'05
9:58 a.m.
On Tue, 22 Feb 2005, Richard Lewis wrote:
I remember this from A level computing: the last digit is a check digit. Don't ask me how its calculated, though.
If the way the check digit of an ISBN is calculated matters to your application, you can read all about it on the third page of http://www.inference.phy.cam.ac.uk/mackay/itprnn/ps/233.239.pdf.
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HTH
Dan Hatton
http://www.bib.hatton.btinternet.co.uk/dan/