This technote presents a modular set of procedures which can be used to convert decimal numbers to any non-decimal numbering system from binary to base 111. You can also convert from any of these non-decimal numbers back to decimal again. By using decimal as a least common denominator, you can convert from any non-decimal numbering system to any other.

WIN
/DLTN/TN/1996/Windows/TN_1996_11-15_(MAR)/96-15_Non-Decimal.exe

MAC
/DLTN/TN/1996/MacOS/TN_1996_11-15_(MAR)/96-15_Non-Decimal.hqx