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HP 48Gx 128Kb Ram Programmable Expandable Graphing Calculator | 
| Manufacturer: hp
Category: CE
Buy Used: $169.98
Used (10) Refurbished (1) from $169.98
Avg. Customer Rating:  2 reviews
ASIN: B000MYX2O0
Availability: Usually ships in 1-2 business days
Condition: In good condition. Comes with quickstart guide, user's guide and case. Battery compartment had small battery leakage, but calculator works flawlessly.
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| Customer Reviews:
"Old," but Not a Dinosaur March 1, 2008
I just recently (today in fact) obtained a like-new HP48GX. I had never used a Reverse Polish function calculator before, but after playing with it for a few hours, I am amazed at what this calculator can do. Once you learn the beauty of the stack manipulation, you'll never go back to algebra-based competitors. Furthermore, even though the HP48GX is over a decade old, it can do things out of the box that my TI-89 Titanium can NOT do. Vector and Matrix manipulations are a breeze with this "old" calculator!
The HP48GX allows you to solve mathematical problems as you go along, so you reduce the "fat finger errors" inherent in the other competitors' designs. The only downside to the HP48GX is the slower processor and the rarity of the RAM expansion cards.
If you want a calculator for professional use, HP is the way to go. No wonder the older engineers guard their old calculators!!
The most reliable electronic device I've ever had February 5, 2008
I've had my HP-48GX for almost 15 years. It has seen all the abuses that a calculator may suffer inside the backpack of a college/graduate student. I've taken it with me on several assignments overseas, has seen temperatures above 40C, temperatures below -10C and most recently I spilled a glass of water on it (by accident of course). It's still working!!! I always carry it with me... I know my laptop may fail but not my little powerful calculator. RPN notation reduces the number of operations. The functions available and the ability to plot and deal with matrices have made my life easier (as a student and as a professional). After I spilled water on it I was thinking of buying an HP-50G... but my HP-48GX is still alive and has a long road to go. HP-48GX = Reliability.
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