
Hi, i’ve buy this great graphical calculator programmable for to play with space physics and gravity’s formulas. However, be warned that the touchpad irritably exists and the battery life may be too short. So, overall, it's a fantastic calculator. I have to recharge the device every day basically, which is much less than the months I got out of my TI 89 Titanium. I wish there were a way to disable the touchpad.Īlthough the battery is conveniently rechargeable, if you plan on using this for hours per session, the battery will not last long. This isn't very pleasant, especially if you plan to use this for hours. There have been times when I would quickly click on the arrow keys to have the touchpad functionality enabled and cause an incorrect selection. While the touchpad is "modern", it is straightforward to accidentally swipe your finger on the pad and select the wrong action. However, I have an issue with its touchpad. Also, it graphs functions a lot quicker than any other Texas Instrument calculator and looks really good with its multi-colour display. This calculator is easier to operate, especially when it comes to graphing functions. But to be honest, I don't mind it because it organizes everything into a little menu. Eventually, I chose this calculator despite its higher cost since I was already comfortable with the key layout (from previous Texas Instrument devices) and overall functionality.įor most of my life, I've used the TI 89 Titanium, and although the CX II is easy to learn, there was a learning curve as the function keys are all moved to the menu button. Having owned the TI 84 and then the TI 89 Titanium, this calculator was one of two options I was considering when upgrading. It has been about two weeks since I purchased this calculator, and since then, I have used this device daily for about two to three hours each.
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