Click on the title to download the relevant manual. Any manuals not listed here can be purchased... read more

HP Firsts

HP has always been an innovator and calculators have been part of that legacy. Here ... read more

HP Calculator Connectivity Kit (CONNX3) for HP39G The HP39G+ connectivity kit allows you to transfer aplets(tm)... read more

Reverse polish Notation (RPN)

Hewlett Packard is the only calculator maker that offers RPN on it... read more