HP35S Rectangular Polar Conversions - PDF - 679kb  

The following programming code is a software replacement for the y,x->q,r (Rect->Polar)and q,r->y,x (Polar->Rect) commands that were present on the HP33S and have not been implemented on the HP35S

Geocalc Users Reference Manual Sample Copy - PDF - 2.84MB  

This is a low resolution sample of the full comprehensive Reference Manual for the Geocalc Software v.3.2 which has been developed for the HP48 series, HP49 series and HP50 calculators.  This manual provides an insight of the full functionality of Geocalc together with worked examples and example screen displays.

HP20B Datasheet - PDF - 1.09MB

HP20B Review - PDF - 424kb  

Provided by the "Handheld And Portable Computer Club" (HPCC).  Acknowledgements to Mr Gene Wright.

HP OfficeCalc 100 Datasheet - PDF - 516kb

HP OfficeCalc 200 Datasheet - PDF - 520kb

HP PrintCalc 100 Datasheet - PDF - 3.40MB

HP QuickCalc Datasheet - PDF - 3.44MB

HP StreamSmart 400 Datasheet - PDF - 560kb