The minimum hard disk space required for installing OCR for 16 bit is 10 MB while that required for 32 bit is 20 MB. What is that big difference for?
Actually the real free hard disk space required to install OCR 16 bit is about 9 MB and that required for 32 bit is about 10 MB, but OCR creates temporary files on the hard disk during processing and deletes them right after that. So the actual free disk space required to run OCR is greater than that required to just install it.