My personal calculator history

[Hiwi]

I started with a TI57 at school in 1978/1979

1982 a HP41CV with Cardreader, added later some peripherals like IL Printer, IL Cassette, Math Rom. Time Module and X-Functions. Still in use, but as a HP41CL.

As a member of the CCD i bought a CCD Modul for a subscription price.

1984 HP34C, later replaced with a 15C , which I used many years in my office.

1988 HP71, HP75, Thinkjet, Video Interface, IL Disk. Bought used from an collegue.

1990 HP28S - but I never warmed up to it, because I did't understand the ingenious approach of it. For what do i need a solver :-? I changed my mind during the years and i am using it now every day. Nice machine.

1992/1995 HP48SX/G still in use with Sparcom PIM and for complex calculations.

Ralf