
Use this daily for minor calculations -- fire up the PC for the big stuff
Also own an original HP 35 from 1975 (5 years and 2701 days ago)
Pound, shilling and pence ![]() by friiskiwi 9186 views - final score: 69.8% | Correct answer ![]() by Remsphoto 8422 views - final score: 68.4% | My first scientific calculator ![]() by MarcosSanchez 10580 views - final score: 66.5% |
Bills, bills and more bills ![]() by friiskiwi 5578 views - final score: 65.6% | Counting Change? ![]() by kyricom 5834 views - final score: 65% | Basics ![]() by kyricom 2601 views - final score: 64.6% |
old and the new ![]() by meatman 4160 views - final score: 63.3% | Just another Day at Work ![]() by Alan2641 5071 views - final score: 62.9% | everest z5 ![]() by lincemiope 3581 views - final score: 62.8% |
Geometry ![]() by friiskiwi 2941 views - final score: 62.3% | abacus ![]() by lincemiope 2951 views - final score: 61.7% | Jai Prakash Yantra - Janthar Manthar, Jaipur India ![]() by awinibhat 11472 views - final score: 60.7% |
Sundial ![]() by awinibhat 4808 views - final score: 59.9% | chess ![]() by lincemiope 5481 views - final score: 58.3% | PI ![]() by teecee 2019 views - final score: 54.3% |
Howdie Guest!
You need to be logged in to rate this entry and participate in the contests!
LOGIN HERE or REGISTER FOR FREE
The HP calculator was the darling in my engineering college, but I confess that I never liked it very much, just had the "enter" key and did not have the "="... Major fault ...

Nice photo by the way...
The use of RPN ( Reverse Polish Notation -- No equal)is something that took awhile to get used to but I am confused by calculator that have an equal button after using HP for 35 years
Howdie stranger!
If you want to rate this picture or participate in this contest, just:
LOGIN HERE or REGISTER FOR FREE