Scientific calculators that have formula/equation memory

[martinot]

(02-16-2018 06:13 PM)JeffJ Wrote:  The HP-35S was given a bad rap by all the grumpy old men on this forum when it first came out, and yes, it had some bugs you could potentially run into, and it is a little wide for single-handed use, but honestly it's a great calculator and very affordable. I have a number of HP calculators from HP-45 all the way to HP-50g and I have found my HP-35S to be very much a "daily driver". I have one at work and one at home. My recommendation to everyone would be they get one while they can, because history has taught us that HP will soon drop production of them and instead of paying $60, they will be $600 on eBay.

By the way, I have replaced batteries on both of my HP-35S calcs a couple of times (or more?) and never lost memory. My recollection is you have at least half a minute to slide the old battery out and the new one in, which is more than adequate time.

I agree. The 35s is far from perfect, but a great daily driver for normal needs! Probably the best calculator you can buy for the money today.

TiP: Both batteries work in parallell, and you can easily without stress change one at a time (the calculator should be able to work on only one, but I have not tested that yet).