This is TI BAII PLUS app just found it in my 1st Gen iPod Touch never own a real TI BA calculator but happen to got it as an app for iOS. I do own HP 12C and HP 15C app try both of them and found that HP calculator is much more easier to learn and use than the TI calculator.
My biggest complaint about the BA II Plus is the horrible key response. There's no two-key rollover, and it easily misses fast, repeated keystrokes.
TI BAII PLUS keys sequence is very confusing and take more time to master.
(06-22-2017 11:16 PM)Dave Britten Wrote: [ -> ]My biggest complaint about the BA II Plus is the horrible key response. There's no two-key rollover, and it easily misses fast, repeated keystrokes.
That's it! I couldn't quite put my finger on why the TI BA II Plus Professional was so annoying, but this is exactly the issue. Even though the keys click, it was always dropping out digits. It cannot be trusted.
The HP 17B II has me spoiled.
Alan