TEXAS INSTRUMENTS Instruments GRAFIKRECHNER TI-NSPIRE CX-II T CAS, Black

Use this calculator for my Business Management studies, for which it is overkill. It's easy to use and understand, with a companion application that replicates the calculator.I had the good fortune to buy this calculator during a sale. It is a solid device, feature-rich, and easy to use.

The goods arrived earlier than promised, and work very well.Good service and appreciated.

The best calculator ever. More user friendly than the HP prime calculator despite the fact that it doesn't have touch screen. A must have tool if you're enrolled in university level calculus course.

Came quite quick, worked out of the box, no issues at all. The user interface is quite decent as well. The menus are quite easy to navigate once you get used to them.

My version of the keypad is red on black, and is of very poor contrast.Equally bad is that the key clicks are like old TI wedgy 1980's-style hard-click keys which are (a) uncomfortable, and, (b) not as easy to use as fast as other quality keypads such as almost any other calculator on the market, including the TI-83, TI-84,TI-89/Voyage 200, any Casio, any Sharp calculators, even if you get past the unintuitive lay-out.It took me very little time to be able to fly through the menus on the TI-83, and find special characters on the Voyage200, but I am finding it hard to quickly find certain items on the nSpire *unless I use them frequently*.The mouse'pad' is awful.The functionality of this machine is exceptional but is let down by the keypad both mechanically, and in soft functionality.Thumbs up for the inclusion of student software which is basically an emulator for your PC, although it also includes pairing software so you can start work on your calculator, and carry on on the PC, and vice versa.Come on TI, fire the senior person who made the decision on the keypad ( not the engineers ), get your act together before you lose your reputation. I'm thinking of Casio or Sharp next time unless TI sort out the basics. The TI-83/84 and TI-89 are preferable machines to this, especially the TI-89 which has great CAS. Few people need the extra speed of the nSpire over the nice-to-useness of the 83/4 or 89. There are a few functions unique to the nSpire, but my bet is anyone who needs that extra functionality would be in a position to add a quick program or function of their own to do it anyway.For students, get yourself a T89 which has CAS. I guarantee you will learn maths quicker and easier than the nSpire. If you can find one and afford it, the Voyage200 is a qwerty version of the 89 with a few tweaks to the menu system, but they are very similar. Even though the screens are older LCD so not as clear, you would never regret having one of these machines, but might regret buying an nSpire.If you definitely are against CAS ( why would you,?), then get an 84 or 83.The older machines are easier to play with maths on imo

I received the device today, not in the original ti calculator style package, and I think it may be missing the sync cable for charging and transferring data to pc. I have tried a generic cable it does charge but my windows 10 pc does not recognize the device in the Ti-Nspire computer link.

Perfect calculator. I like it very much.

I bought this because I wanted the ultimate calculator with all the functionality. And yeah, it sort-of has that. The CAS system is like having Mathematica in your (very large) pocket. However there are two things that mean I don't use this calculator any more:1. It drops keypresses if you enter numbers too quickly. I've never come across a calculator that was so slow it couldn't keep up with me. I didn't think it was possible. But if you have a lot of numbers to add up, surely the most basic thing you can expect of a calulator, this is incapable of doing it accurately because of this problem.2. Having menus, and even a tiny track-pad for moving a pointer around is fine. But they sacrificed a lot of normal calculator keys to fit that stuff in. So functions that on a normal scientific calculator would be 1 or 2 keypresses, now require you do menu dive or enter the name of the function using the alphabetic key mode. From a usability point of view, this is an awful experience.I cannot recommend this calculator, or any of the Ti Nspire series really, because of these problems.