After about 25 years, I need to replace the batteries in my HP 11C.
I know it takes three SR44 coin cells, but which one to buy for long life? Probably not the alkaline cell Amazon Basics offers. Who has coin cells as good as the originals?
Finally, my collection of the 49/50 series is complete.
I finally managed to get a blue HP-50g, I got it for $50 USD... Box in Spanish, quick guide in Spanish, French and Dutch. I usually don't keep the boxes but I think I will for this one because of its rarity.
As I have mentioned in other posts, the keyboard is what lets the DM15L down.
The calculator is very well built, high quality materials, great 2 lines display, faster chip and plenty of memory.
But if no HP15C in good condition are available in the market, the DM15L is a very safe purchase that will last a very long time.
A great find on gumtree.
Very good price too, excellent condition.
There are fewer HP12C in the market at the moment, and some of the prices asked are ridiculous.
Two newly-acquired machines from the HP 'Spice' range. The last range to have LED displays. They were more fragile than the earlier 'woodstock' series and fewer of them have survived. The HP31E in particular is quite rare, as the 32E beside it was only slightly more expensive and had a lot more functions and more storage registers. These two were acquired untested, and after making two new battery packs for them, they're up and running and a nice acquisition to my collection.
A nice gift from a good friend straight from the USA. New batteries.
The 19B is an amazing machine that features the game changing Solver.
The keyboard is a pleasure to use.
I may just cover the battery door with gaffer tape just in case.
I’ve been using HP-12C & HP-16C emulators on my iPad & iPhone and macOS, Linux, & Windows computers.
Does anyone have a favorite emulator?