HP 75

[Sylvain Cote]

(02-14-2015 12:57 PM)John W Kercheval Wrote:  Out of just general curiosity. Is anyone regularly using an HP-75? If so what are you using it for?

I love my 71B- it runs a lot o things, including all of the HP41 software. The 75 has a larger more luxurious layout but I've always wondered about its real world usability. Back in the 80s, in the Berkeley store we only sold 1 75. But a lot of 71s.


John

Hello John,

Yep! me. 8-)

I own several of them.
My two standard configurations are:
1) HP-75C/D + 8KB RAM + I/O-ROM + Math
2) HP-75C/D + 8KB RAM + I/O-ROM + Math + ExpansionPod
Both leaves me with 1 free port for other modules.

Today, I do most of my HP-IL tests with it. (along with my 41's and 71's)
The unit is fast and the keyboard, altough not perfect, is very good for typing.

Back in the 80's, I had the first configuration with the visicalc & text formatting modules,
the 82163A/82912A video display, the 82905B impact printer and the HP-7470A plotter.

I used it for math exploration, document writing, spreadsheet, agenda and as an instant problem solver.
It was also the machine where I learn the Forth language using the John Cassady implementation.

At the time I also had an Apple II setup (AppleII+Z80+80Col+FloppyDisks+Monitor+Printer+Softwares)
that was used basically for the same thing as my HP-75 setup.
The main reason I was using the 75 more often was the instant on/ready of the unit.

I also bought the HP-71B upon released, but I used the unit to control electronic labs,
remote devices and of course as an advanced calculator.

So in summary, the HP-75C was my general computing device
compared to my 41's/71's who was used as calculators and HP-IL controllers.

Best regards,

Sylvain