![]() ![]() See followup message, seperate posting, on a revision level question. Thanks for the responses on the battery type. In response to message #5 by Thomas Okken Message #6 Posted by John Horak on, 10:21 a.m., ![]() I never had an HP-42S lose memory when I changed the batteries - this is with 3 different machines, including my current one (1993 model, rev. In response to message #4 by Karl Schneider Message #5 Posted by Thomas Okken on, 7:22 a.m., I also have a newer design 42S from 1992 whose batteries I haven't yet changed. My older-design 42S from 1989 recently survived a battery change with memory contents intact. artículo 1 HP-42S RPN Scientific Calculator with Case. HP-42S have a problem of not retaining the contents of memory during battery changes - maybe a bad batch of capacitors was used, I don't know. Las mejores ofertas para HP 42S Scientific Calculator están en eBay Compara precios y características de productos nuevos y usados Muchos artículos con envío gratis. imagine FRS over ZigBee with multi-week standby battery. Try the completely free Droid48 (HP-48G/48S) and Free42 (HP-42S. Silver oxide lasts longer but costs more. 69 thoughts on An Open-source Scientific RPN Calculator. They are interchangeable, but it's best to use the same chemistry (alkaline or silver oxide). Luiz and John Limpert have given more details, but the simple answer is, three of any type 44, 76, or 357 cells. Esteticamente ricalca fedelmente la famosa calcolatrice scientifica di HP. Free42 ha due calcolatori, uno binario ed uno decimale. Message #4 Posted by Karl Schneider on, 3:28 a.m., Free42 HP-42S Calculator Simulator porta la prestigiosa calcolatrice scientifica HP-42S direttamente su tutti i PC Windows. Re: HP 42S - Battery Type and Constant Memory It's a silver oxide battery (lasts longer) and it has received good reviews. Message #3 Posted by John Limpert on, 2:24 a.m., Maybe some of these do not even exist, and even better models are available. In fact, these references are taken from the original HP15C Owner's Handbook, dated February 1984. For a higher current consumption (in case you plain to use the printer output constantly) you can try the Silver Oxide models: Eveready/UCAR 357, RAY-O-VAC RW42 OR 62, Duracell MS76, or others. They are the same as the National/Panasonic LR44, Eveready/UCAR A76 OR RAY-O-VAC RW82 all alkaline. You can use the same ones designed fot the Voyagers (HP10C to HP16C). What kind of batteries does the HP42S use? The owners manual just says it uses 3 button batteries, and the 42S I recently acquired came without batteries, and I want to make sure I get the right kind. Message #1 Posted by John Horak on, 12:53 a.m. So, I'd say try it, but I'd also be honest with your dad.HP 42S Battery Type The Museum of HP Calculators The cheapest HP you'll find is a 35s, which runs about $50-$60. A TI-36x Pro is $20 and can be found everywhere. If it breaks or gets lost, you're out $150-$250, depending upon what 3rd party seller you encounter. Which is another reason I wouldn't use it daily. c) Have a palmtop with PalmOS and want a nice scientific calculator (get Free42) d) Just want to have an idea how 42S was. b) Got the Free42 simulator and want to know how to use. RPN advocates will say it's better because of speed, but it's worthless if you make mistakes. a) Have a HP-42S calculator and lost its manual. IMO, multiline displays are superior because you can see exactly what you entered. RPN is nice, but it's really not necessary anymore and the last thing you want to do is fight with a calculator you don't know on an exam. The HP RPN calculator has largely gone out of fashion it seems. However, you should use a calculator you feel comfortable with. HP introduced the 1st scientific calculator (HP-35) then introduced the first business. Just go over some math problems you did in the past and work it out using the HP. What type of batteries do the HP Calculators use. ![]() You probably don't need to read the whole manual, but use it as a reference if you don't know how to do something. ![]()
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