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The Platium model has a faster processor than the 12C. It is fully programmable with many programs available in the downloadable users guide (pdf). If one enters a several digit number and the last digit is incorrect, simply press the G- keys and the last digit is erased. The 12C will erase the entire number. The 12C Platinum is a powerful well-built calculator and can operate in algebraic or RPN modes. Unless you are a collector, there is no reason to buy a standard 12C.
Verified purchase: Yes | Condition: Pre-owned
I used to love the HP12C, and still do, BUT they have moved to cheaper production and the upshot is that the labeling of the functions ABOVE the keys is now in red instead of yellow/gold, so they are VERY HARD TO SEE. Especially if you are over 45, when the eyes don't work the same way, and red is a terrible choice. If you can find an older model that has these function keys in gold, you will have a more pleasant user experience.
Verified purchase: Yes | Condition: Pre-owned
I am mentoring a grad student in a corporate finance class. When I pulled out my calculator to double-check an Excel calculation (a good habit, BTW), she jokingly exclaimed, “Wow, talk about a 70s throwback.” Well, it looks old, but it’s brand new. By the time our session ended, she had talked me into lending it to her while she buys one for herself. The only caveat: the Platinum version can change entry modes from RPN (reverse Polish notation) to ALG (algebraic) with a function key combination. Shouldn’t really be a problem; a single keystroke won’t change your horses in midstream but it can be annoying if you try for a neighboring function while you are multitasking or “touch-typing” with fat fingers.
Verified purchase: Yes | Condition: New
This is a very good teaching tool for learning Accounting/Finance. The calculator appears to be of very good build quality with very good key feedback. Excellent battery life. The newer 12c uses 2 CR2032 batteries vs the older, gold 12c which uses 3 LR44 batteries. Comes with a digital Quick Start and User manual on CD that can be printed out, but the manuals are over 270 pages. The calculator also came with a nice leather case with a built-in business card pocket. The 12c business and financial calculators are capable of so much, it would take me a semester of college to master its features and programming. The calculator keypad is laid out in landscape versus the traditional portrait style. A new issue of the iconic and classic HP Voyager series 11c, 12c, 15c, 16c, and the HP 71b, this calculator will give years of good, reliable performance to anyone learning or working in Real Estate, Banking, and Accounting. I'm very satisfied with this purchase. Read full review
Verified purchase: Yes | Condition: New
Found an older model on eBay in like new condition to replace one that stopped working after many years of use. These 12 models are terrific and can can last many years with trouble free performance. Easy to use keyboard with many features. Easy to carry pocket size.
Verified purchase: Yes | Condition: Pre-owned
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