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I am pleased that these low cost guides remain available. I have purchased several. I am participating in the SwissMicros DM42 calculator beta program and have found the guides useful memory aids. I have PDF copies of the original HP 42S manuals, which are excellent, but tuck the guide into the calculator pouch to ensure some help is always available. For what it's worth, the new SwissMicros version of the calculator is simply outstanding. It had Thomas Okken's Free42 emulator code base, USB connectivity for upload/download, metal casing back, crystal clear Sharp 400x240 pixel display, long battery life, high quality fit and finish, etc. It is a better calculator than the already great 42S was. I guess that it should be out of beta and available for order sometime soon. The 42S has a new lease of life. I have a number of HP calculators, but this was and is again simply the best engineering calculator.Vollständige Rezension lesen
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"This calculator is often regarded as the best ever made in terms of quality, key stroke feel, ease of programming, and daily usability for engineers. Many scientists and engineers use this calculator today, 25 years after its introduction." Wikipedia on the HP 42s Around the turn of the century, HP terminated its' calculator development team and decided to reduce the quality of its' calculators. Since then, Kinpo Electronics of China has been making scientific programmable calculators and HP has been putting their name on it. Kinpo made the HP 33s and the current HP 35s calculators. If you'll read the reviews on eBay, Amazon and HP's own public reviews you'll notice that Kinpo's calculators aren't as good as the one's HP used to make. HP must have read them too and obviously doesn't care any more. In my opinion, the best scientific programmable calculators that HP ever made are the HP 67, HP 15c, HP 32sii and the HP 42s (although I'm very fond of the HP 29c and HP 34c) The best of the bunch I'd have to say is the HP 42s. Personally, I'd like to see an HP 15cii and an HP 42sii. I've asked HP's new President & CEO Dion Weisler to do just that, but I'm not holding my breath. I don't expect HP to ever make a quality calculator again. HP no longer deserves to be associated with quality. Judging by the high prices HP calculators prior to 2001 fetch on eBay, I'd say many others feel the same about HP now. That's a real same. We've told HP what we want and that we're willing to pay for it. Yet, they still won't do it!Vollständige Rezension lesen
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The HP reverse logic calculator is the easiest to use and the HP 42S is the best and most durable made. The calculator is different than the standard calculator in that you enter the number, then tell it what you want to do with it. This means that you can put a number in, then figure what the next step is. Also if you enter a wrong number, you can back up and correct it without losing your calculation. The keyboard has all the needed functions for geometry, and complex functions. The X=Y, and 1/x are very handy. Lots of storage registers. You will need the book to figure out all the function capabilities. Press "exit" to turn on, press "off" then "exit" to turn off.
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Bought another one. I use and I collect spares. I would like to have a working unit all the days of my life. This machine is a marvel and easily the best scientific calculator ever made. No other manufacturer (TI, Casio, etc.) has produced anything close. This vintage (and still quite relevant unit) represents everything that made HP calculators the go to units for REAL Engineers and Scientists. The built-in function set is COMPLETE. The handling of complex numbers is top notch, and the unit is very easy to program with enough memory to tackle the toughest problems. This is the ULTIMATE ONE!!!!! Jun 30, 2013 An God said, "Let there be the hp 42S....." I continually marvel over this truly magnificient machine. I bought my first as a senior in college after reading an add which stated that the hp 42S RPN scientific calculator was "engineered for the engineer." And I can say the it truly is. It is equipped with anything a working electrical engineer (or any other engineer) needs. The complex number handling was a dream come true, and this hp great is very easy to program. I have used other machines, but this one is truly "the pinnacle of pocket calculator excellence" as another author once wrote. I was so saddened when HP discontinued the model (the end of a great era). I have since bought numerous spares at apparently exorbitant prices, but the machine is worth it, and I do not have kids in daycare (so I can afford them :)). I should be set now until the end of my life at which point I shall consider owning this truly blessed machine one of the most cherished aspects of my life. Vollständige Rezension lesen
This is, IMHO, one of the best scientific calculators ever made. It's two-line dot matrix display and on-screen menus make it easy to use and program. It has the HP-typical high-quality look and feel, and the battery lifetime is simply amazing! It's comparable to the battery lifetime on the HP-20S (I have the original 1990 batteries in mine and they still hold charge!) This calculator has all the functions known from other HP models, including matrix operations, the HP Solver, numerical integration, complex numbers, and keystroke programmability. It also has an IR interface to talk to HP calculator printers. The built is sturdy and it has a stable plastic case.
I once owned an HP 41C calculator. After years of faithful service, I decided to move on to an HP 12C, as it was smaller and fit better in my coat pocket. However, I began to miss the power, functionality, and versatility of the HP 41C. I tried some of the newer graphing HP's, but they were far too complex and too bulky for my purposes. Then I came across the HP 42S, which was designed with the power and functionality of the the HP 41C without the bulk. I am able to use the same programs that I wrote for my HP 41C and even print the results using the HP 82240B infrared thermal printer that I purchased for use with my HP 50g graphing calculator. The two-line display is an improvement over the HP 41C and the HP 42S retains the alphanumeric capability and programming language that I enjoyed with HP 41C. The ability to assign functions to keys is improved with the HP 42S since there is no need for keyboard overlays. Instead, the HP 42S uses a "custom" command to show special key assignments. Of course, the HP 42S uses the RPN system, which some of the later HP calculators, such as the HP 21S, have abandoned. The only downside to this calculator is that it doesn't have the flexibility of the HP 41 series calculators with respect to the plug-in modules. Of course, that problem is easily overcome by using my desktop or laptop computer for truly high-powered and unique computational requirements.Vollständige Rezension lesen
The 42S is one of the best HP calculators ever made. It has 7K of memory, Reverse Polish Data Entry, a 2-line LCD display, complex number support, matrices and years of battery life on one set of cells. The 42S is reverse-compatible with most HP41CV programs, and despite the lack of computer connection or extension modules, is a very capable programming calculator. *If you want to accessorize your HP 42S look for one of the classy HP pioneer Leather Cases 92169K (black) 92169L (Brown), or 92169M (burgundy). *Cheaper RPN Alternatives: 32S, 32SII, 11C or HP 15C *Cheaper Algebraic Alternatives: HP 27S *Upgrade: HP 48G, 50G
I have been a long-time convert to H-P calculators since 1975 when I purchased my first, a HP-75, which I still have. I purchased my HP42S many years ago, and always felt the need for a well made 'aide-memoire' much like the ones I have for my other H-P calculators. I had almost given up ever finding the original version for the HP42S that was produced by HP way back in 1988, but, here it is! It is the original, even down to the original HP part number and envelope in which it was supplied. It is printed on good quality card in a 10-page book format that neatly and easily fits in the HP42S case. It covers all the essential aspects of using this beautiful little programmable calculator in an easy to use format. OK, you really need to have read the User Manual first, but as a Quick Reference Guide it excels. Suffice to say that I am delighted, it is an essential HP42S accessory, get yours whilst there are still stocks left.Vollständige Rezension lesen
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It is in pretty good shape , and it functions as it should . The only complaint I would give is that part of the face plate is loose which you can see in my photo . This is just a cosmetic issue . I don't care that much about this issue . It is much more important to me that it functions as it should .
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I purchased a 42S during my junior year in college. It wasn't a cheap purchase even back in the late 80's but it was the best college purchase I bought for my engineering degree. I have had several HP's but this is by far the best calculator. The one I purchased back then was stolen from my bag including my laptop and I missed my calculator more so. I was disappointed to find out HP didn't make a 42S version anymore. I had to find another reasonably priced 42S and wouldn't settle for anything less. I'm currently an environmental engineer and wouldn't use any other calculator than the 42S I found on Ebay.