HP50g - RS-232 cable

[mfleming]

Hi Joerg,

I actually have two cables, the first being the one for the HP48 or 50 serial port. This cable has a DB9 connector at one end for the PC serial port and a molded end for the calculator. If you search for "HP PC Connectivity Kit" on eBay you can still find the HP48 cable. There may be more information about the HP50 serial port connector on the hpcalc.org web site. Good place to check.

It's been a long time since new a PC included a serial port, so the second cable I have (the one I referred to in the previous post) is a USB to PC serial port adapter. If you already have a serial port on you PC, then you would only need the first cable.

As Cyrille mentioned the HP50 has a pretty wonky RS232 implementation, and AFAIK not too many of those DB9 to HP50 serial port cables are around. Most people relied on the USB COM port for communication or used the SD card to transfer files. You could just get the older style SD card that the HP50 uses and transfer programs and data. Those cards are also getting harder to find, but I did buy a few from Amazon last year after picking up a new 50 after it was discontinued.

Hope that helps!
~Mark