I am trying to identify a calculator I used in the late 60's or very early 70's. Definitely before hand-held calculators. ....Hewlett-Packard? Approximately 14" x 14" x 24" high and rolled on casters. Keypad and digital readout was on top. Add, subtract, multiply, divide only. Stack memory. RPN?
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identify old calculator?
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Post: #9
03-08-2010, 12:41 PM
 Hi Randy
Give a try to this site :
Post: #10
03-08-2010, 04:05 PM
Most of the early electronic "monsters" had 2 casters on the back side - too heavy to carry around, you just had to lift the front a bit and were able to move the calculator somewhat back on your desk. Your description limits the number of possible calculators to around 100 or so... So a little drawing (position of keyboard, display, maybe outer casing, as these were often quite "strange") might help to narrow down to a handful of possibilities. ▼
Post: #11
03-08-2010, 10:52 PM
Here is an image of what I remember. It didn't roll around on the desk but rolled on the floor. I apologize for the lack of details.
Edited: 8 Mar 2010, 10:54 p.m. ▼
Post: #12
03-09-2010, 04:22 AM
I haven't seen a floor-standing model yet. Are you sure it wasn't just mounted on a cabinet? The first electronic calculators (Anita, IME, Canola, Sharp) were "desktop-sized".
Post: #14
03-08-2010, 04:24 PM
Quote:Definitely not HP. From this site: The HP 9100A was Hewlett-Packard's first calculator. In the mid to late 1960's electronic four function fixed point calculators were brand new and typically cost $1000-$2500. In 1968 HP introduced the HP 9100A featuring:
* Floating point math with a range of 10^-98 to 10^99 |
