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5 people found this helpful
Poor quality compared to original model
on April 3, 2014
I have been using an HP 12C since my grad school days in the mid-1980s. I still had the original from then until just a few years ago when it was lost (or stolen?). I am now on my second replacement. The quality of materials and workmanship is definitely lower now than it was in 1985. The first replacement worked fine for 1-2 years then started yielding inexplicable and inconsistent errors in calculations. The second replacement - which I've only had for two years or so - now has a defected #1 key. The key doesn't fully spring back up when released and has to be pressed VERY HARD to get the #1 to register at all. Obviously, this makes it very difficult to achieve any sort of speed, which is one of the main advantages of RPN. I will be getting another replacement now, sadly knowing that it, too, will probably have to be replaced within a couple of years. Because of the price, it's hardly worth pursing the matter with HP, but I'm very disappointed in the quality of the current product. I downloaded an HP 12C app for use on my iPhone. It works fine, but it lacks the tactile sensation of the real thing, so the process of using it is much slower than on the real HP 12C.