Posts: 673
Threads: 20
Joined: Oct 2008
It is a great pocket calc. Hp no longer makes this calc( a poor decision on their part). The closest comparable calc is an HP 19bII. It has everything the 27s has except binary, octal, hex conversions and Algerbriac precidence. Both of these features are a big drawback. It does have algerbraic/rpn selectable option and also a units conversion feature that the 27s lacks. If you do not need trig functions the HP17b is packaged exactly like a 27s and is probably more durable and cheaper than the hp19. All three had similiar HP solve and 7 K RAM, and the same statistics functions. Otherwise you will have to bid via ebay or ask via classified's.
Posts: 11
Threads: 5
Joined: Jan 1970
Dear Jan,
Try to get a used HP27s on auction seller ebay (www.ebay.com). Look for hp calculators. I saw several auctions of it. At the moment one is selled for a rather high price, but sometimes a price beneath 100 US$ is possible. Succes with it.