I always leave my calculator in my backpack at school even when I'm not watching it and go away. Everyone does this and I never heard of one being stolen. Only cash and mobile phones are at risk. But then again I live in Switzerland and people here only steal wallets, iPhones and laptops.

Ctrl+cat opens a box with pi, but I think you're talking about the other one. I've no idea about that one.

The easiest way to do this is to type "set" into your command prompt and hit enter. Depending on the language of your computer the spelling is probably different, so you'll have to mentally translate it and look for a word similar to set.

Things like cmd commands are the same on every windows computer, no matter which language.
My environment variables also have the same names as Hayleia's.

Hi,
I am planning to buy an nSpire and intend to try my hand at programming it. I've had experience with TI-BASIC programming for the 84 and have dabbled in C programming for the 89 (using TIGCC) and as such have developed software with C, Java, and Python on computers.

1. It seems that there is a CX and regular version, with the former having considerably more memory - so clearly, the CX is the superior choice for programming. However, I really hate the CX's keyboard (

Spoiler For Spoiler:

) and was hoping if I could get a CX nSpire with the keyboard of the original nSpire (

Spoiler For Spoiler:

) (I'd be happy with pretty much any other keyboard to be honest)

2. I want to be able to code in both Lua and C (using ndless). Which operating system of the nSpire do I want so that I can do both? I've snooped a bit and discovered that ndless doesn't work for 3.0+ but Lua only works for 3.0+. Is there an OS that supports both? Ideally I would want to be able to use both languages to code by, say, programming in Lua and calling C methods.

3. Before I get the calculator I want to play around with it. So I looked up nspire_emu but in order to run it I need a boot2 file. What exactly is this file, a copy of the operating system and memory? Is there a way for me to get a fresh boot2 off the web?

4. What exactly is the full story about not being able to downgrade your nSpire OS? Does it mean that if my newly-bought nSpire CX comes with 3.0, I can never downgrade to 2.0 and use ndless?

1. The first picture isn't a CX, if you think that. It has the same keyboard, though. But because of the color screen the CX is much better than the old Nspires, and the memory is also better.

2. OS 3.1 has Ndless (so C and ASM) and Lua, that's the OS you'll want.

3. You can extract the Boot2 from an OS upgrade file by unzipping it (it's just a zip file with other extension), but for cx emulation you also need boot1, which you don't get legally if you don't have one yourself. Maybe you can find one by googling.

4. You can't downgrade from 3.1 to anything lower, but you'll never want to (Ndless is only up-to-date for OS 3.1). From 3.2 you can downgrade to 3.1. Most likely the next OS update will block downgrading once again, so never update without asking us before.

At my school everyone has to buy a Nspire CX CAS, and before a classic Nspire CAS. About six years ago they had Voyage 200s, but now those are 350 $ (converted to US $).
The school has a Nspire CAS clickpad for every maths/physics teacher and some ancient non-scientific calcs for exams.
But we almost never use calcs in class, and when we use them a scientific calc would normally be enough.

No, that won't work. nTNOC only removes the Boot2 from the OS file in the filesystem, not the actually installed Boot2. The removed boot2 is completely useless, as after its installation it's never used again.

As far as I know there isn't any on-calc assembler or compiler for the nspire yet. You could write your programs on your calculator, but to compile them you'd have to transfer them to your computer.

Or program in Lua.