Posts: 298
Threads: 35
Joined: Jan 1970
Try,
HP35, 45, 21, 27, 31E, 32E for scientific models, these may be hard to track down if you want one right now. I would have at least 1 spare battery pack as these are LED types and may not last a long exam. Beleive me - not having a calculator in an exam is no joke. I doubt if the exam board will let you have a mains hook up just for your calculator.
I'd take in an LCD type calc. as a backup (HP30S?).
Tom (UK)
Posts: 68
Threads: 6
Joined: Aug 2007
Just sold one to Guy Ball (he got it cheaper than I paid for it!) an Omron SR-12, which operates on disposables (hey I have not shipped it yet, Guy ;+}. RPN, not programmable. Seems like I have 2 more non HP, non programmables, NEC can't recall the model and APF Mark 55 I think plus a bunch of HP's like try the HP 21 which will run on disposables or new composition cells as well.