This is my first ever review of any product. I own a lot of calculators. Mostly HPs (12C, 10B, 48GX, 49G+, 50G), a few Casios, Sharps, other specialized types. This is my first TI and it is a real nice piece of work.
In a nutshell, this is one spectacular business calculator. It looks good, feature rich (I can't think of anything I would want that it doesn't have), interesting interface. A total winner.
I ordered on June 5, 2007. It arrived June 12th. About $35 w/free shipping. I won't compare it with the HP12C. Have had the 12C for a long time. Always loved it. Faster, slower? Po-tAto, Po-tato.
With all the good things about this calculator, there are just a few things I'd change or add to it.
There are three glaring flaws that I can't believe they forgot.
1) No equivalent to the "EEX" key on the 12C. Or at least a "000" key that allows entry of thousands, millions, ... with one button press. This is a very annoying ommission for me. Keying in 3, 6, or more zeros is a real pain in the arse. This is an absolute must have feature.
2) A calculator with trig functions and no "PI" key? Duh!
3) No slide off hard cover? Very, very bad move.
Maybe a two line display would be nice. But I won't lose any sleep over that.
The rest for me is just key placement. Moving from upper right to lower left for power and clear? These keys are nearly always near each other. The "CE/C" and back arrow key also on opposite extremes. They should be clustered closer together.
The on/off key should also be a shifted key to avoid accidentally keying it when unit's in a pocket, or by a stray key press when working. One should have to take deliberate action to turn the calculator on or off. Matter of fact, you should have to "hold" the shift key and press the on/off key to turn the unit off.
The unit should also have the option (in setup) of using "continuous memory" or not. [Meaning when you manually shut the unit off, it comes back on where you left it, rather than clearing]
So, I would move the backspace key up one and make the "on/off" shifted above it. Then I would move the "CE/C" key where the backspace key is now. Move the "CLR WORK" key with the "CE/C" key. Then all the clear keys would be together. Now, where should that "PI" key go? How about shifted above the square root key? Then I would move the reciprocal ("1/X") key to the shifted position and make that key either an "EEX" or "000" key.
Now there would be an extra key left where the "CE/C" key was in the lower left corner. How about a "TIME" key? This calculator is nice enough that it should know what the time and date are. Yes? Matter of fact, it should be one of those self setting atomic types! Maybe a timer too.
Does the equals ("=") key need to be two (2) keys high? No big deal either way. (But no, it doesn't! Move +, -, X, / down one! Hmm. Another extra key. Maybe that could be where the "EEX" could go.)
Last request would be in the display options. On most HP scientific calculators, there is something they call "engineering notation". Basically it is "scientific notation" but grouped in multiples of (3). You know, kilo (E3), mega (E6), giga (E9), ... Has no one thought that this is also "money notation" too? Thousands, Million, Billions, ... Like some annual reports list "(in Thousands)"? Once in awhile a body might want to display like that too (Maybe a letter in the "indicators" along the top could be used. The "T" and "M" in "COMPUTE" could indicate thousands and millions? The "B" in "BGN" for billions?)
For me, this calculator, with these few changes, would easily be the new "world standard" for business calculators. And the trig functions are a nice touch too.
Get more detail about Texas Instruments BA II Plus Professional Financial Calculator.
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