Today I am pleased to present a historical picture

I've put together for you the first graphic in the world, launched by Casio in 1985, the fx-7000G and the recent HP Prime from this back-to-school 2013!
Of course, the fx-7000G has not as many features as the Prime, but it is quite complete, and still works great 28 years later ! It was strong, in this time.



Did you remember this pic I made a few months ago ? It makes the chronology of graphing and CAS calculators



Some models are now forgotten, TI-85/86, the first Casio ones (and we rediscovered some ones several days ago on TI-Planet ), but some series, chaining evolutions like Pokemons, lived more than 20 years to the present day ! (TI-82 > 82 Stats > 82 Stats.fr, and the Flash 8x series...)

Hope those old models won't be forgotten by everybody !
Keep programming on them, guys !

Hello, at the begining of my program, I have put a "Contrast(28" to have a correct darkness and a pretty grayscale on my TI-84 Pocket.

Unfortunately, if I send the program to my 84 Plus SE, it makes a very high contrast, very dark...

The values are not the same between different models, are they ?
How can I detect the type of model to put a good value ?

Thank you for your help...

OS 3.2.4. It is not available yet on Texas Instruments' website, but the latest TI-Nspire CX made ​​come with a new OS, the 3.2.4.1237 (source).

The TI-OSes include an "anti-downgrade" protection, a minimal installable OS version that they write in the NAND memory between the Boot2 and the Diags, an inaccessible area to different official reset procedures.

When installing, the OS 3.1.0.392 increases this minimum version to 3.0.2.1785 if the number was lower.
Similarly, the OSes 3.2.0/3.2.2/3.2.3 increase it to 3.1.0.392.

It officially becomes impossible to reinstall an OS version prior to the programmed number.
In practice, it was possible via two methods:

• using a Ndless utility reprogramming itself this version number
• using the nLaunch OS-pitcher who installs and launches the OS completely ignoring that version number

According to  a report this morning on TI-Planet, it seems that the OS 3.2.4.1237 greatly increases the minimum number of installable version that ... to a value which now refuses to install any previous OS to date, including OS 3.1, 3.2.0 or even 3.2.3!  D:

Therefore, if your new TI-Nspire comes with OS 3.2.4 or if you update your calculator with this OS, it officially becomes impossible for you to use Ndless because requiring the OS 3.1 and this just a few days of the exams. :(

The added bonus, the CAS-engine bugs introduced with OS 3.2 and not present on the OS 3.1 such as roots quotients are still here, and the prohibition to return to a version with CAS that worked better is simply incomprehensible from the point of view of users, even just a few days of the exams.

But does it remains always possible to override the anti-downgrade protection with nLaunch?

The OS 3.2.4 contains as added bonus a new version of the boot2: 3.2.4.4 against 3.1.0.16 since the OS 3.1.0.392.

nLaunch exploited a flaw in the boot2 3.1.0.16, and you can bet, I think, that it has been corrected.

Therefore it also becomes officially impossible to use nLaunch and number of legitimate applications like:

• make cohabit the OS 3.1 and 3.2 on the same calculator to enjoy the best of both worlds with both Ndless programs (3.1) and Lua programs (3.2)
  
• Launch a Linux OS

It can be assumed that this OS 3.2.4.1237 is a response to the recent use of TI-Nspire CX launching TI-Nspire CX CAS OSes to the Portuguese exams that prohibit CAS, possibility that allows nLaunch although this has never been the goal of the authors (not mentioned in the ReadMe).

The only feasible and untested bypass to date would be the reprogramming of the boot2 3.1.0.16 via a TTL / USB adapter (called RS232) to connect to the Dock of the TI-Nspire:

So we especially recommend you to not update your calculator to OS 3.2.4, if ever it appeared in the coming days.

And if you already have a TI-Nspire CX with OS 3.2.4, to date you must certainly not erase it. Indeed, as it is not available on TI's website and as all existing OS are rejected, you will find yourself with a calculator without any OS usable! Again, a few days of the exams, it is not very smart ...  ::)

• source of the information on TI-Planet

Hi,

I have a problem when I try to run a program (that works on all the calcs I have excepted on MathPrint OSes).

Please look at the pic I joined to this post, you will notice that the Text() command displays some 4x7 characters.

A very simple program can verify this:
For(A,1,62
Horizontal A
End
Text(52,3,1
But I'm SURE it is possible to draw regular 4x6 characters like on any 83/83+, I managed just now, but I don't remember how !  
Adding the CLASSIC command at the begining of the program does not solve the problem...


Do you know on which parameter the font size depends ?
Thank you very much !

EDIT: I found the answer on TI|BD: this is a bug of the Text() command. You can disable this effect by using a heavy and useless ":G-T:Full" at the begining of the program. That works.

EDIT: Corrected english version here (2D)

Hello Omnimaga,

This week I was working on the TI-Planet wiki, and I made some research on the releases and end marketing dates of the graphing calculators, since the world's first graphing calc, the Casio fx-7000G in 1985.

Then, HP started to produce awesome graphing calcs, with the first CAS of the world, the HP-28C (but not-really graphing).

Then, you can now see on this picture I finally made to recap my work all the graphing calculators made by TI, Casio &HP, since 1985 to 2013.

I didn't talk about not public models that were never released, like the TI-Nspire CAS +, PLT project (Fido, Toto, etc...), HP-Xpander...




Please notice that the Casio dates were very hard to find and set, different sources say different things, I sometimes made some statistics  

I would be glad if you report me all the errors you can find, it does not normally remains, critor also noticed me some details:

• The Casio Graph 95 "SD" doesn't exist, it's only the Graph 95
• We are not sure that the Casio Graph 35 and the Graph 35+ are different names for the same calculator with only an hardware revision. nonetheless that is what the Planet Casio wiki seems to say. And I think I have read somewhere that they both correspond to the international name of Fx-9750G Plus.

So, this picture is free, use it as you want ! Make good use.




Persalteas

Hello everyone,

It has been time TI-Planet have not organized a contest, and here is the lack filled
So we organize a contest, about 5 weeks, well mixing arithmetic and algorithmics.


Introduction:
In mathematics, a prime palindom number is a number which is both prime and palindromic.

A prime number is an integer that only admits two positive and integer divisors (which are 1 and itself).
This definition excludes 1, which has only one positive and integer divisor ; it excludes 0 too, which is divisible by all the positive integers.
For example 6 = 2 × 3 is not prime and 21 = 3 × 7 or 7 × 3 either. But 11 is prime because 1 and 11 are the only divisors of 11.
So, the prime numbers are, in order, 2, 3, 5, 7, 11...

A palindromic number is a number whose writing (in base 10) is read in the same way from left to right and from right to left.
For example, all the 1-digit numbers are palindromic: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The 2-digit palindroms are: 11, 22, 33, 44, 55, 66, 77, 88 and 99.
101 is a 3-digit palindromic number.

So, the prime palindromic numbers are: 2, 3, 5, 7, 11, 101, 131...

Subject :
Make a program fastest as possible to find the n-th prime palindromic number.

Plateform :
The candidate will perform its participation:

• TI-Nspire
• TI-82Stats/83/76
• TI-83+/84

Categories:
The candidate's production will be judged in one of those categories:

• TI-Nspire
• TI-82Stats/83/84/76

Languages :

• TI-Basic Nspire
• TI-Basic TI-82Stats/83/84/76
• TI-83+/84 Assembly NO SHELL (So, you can participate with Axe compiled for no shell)
  
• TI-82Stats/83/76 Assembly NO SHELL

NB: on TI-82Stats/83/84,TI-Basic and assembly combinations are allowed.

Constraints :
On TI-82Stats/83/84/76, the program will catch n in the 'Ans' variable, and will send the nth prime palindromic number as a result in Ans.
For example, to obtain the 42th prime, we will type:

• TI-Basic program: 42:prgmPALPREM
• TI-83+/84 Assembly program: 42:Asm(prgmPALPREM
• TI-82Stats/83/76 Assembly program: 42:Send(9prgmPALPREM

In each case, the program should send the result 18181 in Ans, reusable in the home screen for calculations.


On TI-Nspire, the main program should be a function which take the n parameter and which sends the result. For example, palprem(42) should answer 18181.

YOU MUST NOT USE a pre-calculated list of prime palindromic numbers in your program, directly under penalty of disqualification.

YOU MUST NOT USE functions like isPrime() which would provide a direct response, it destroys the value of algorithmic thinking, and it would be unfair to those who don't have this function... ;)

The program MUST run on not-CAS TI-Nspires.

Notation :
The final score will be on 20 points, and the scale is as follows:

• 3 points for the proper functioning of the program
• 10 points for the fast execution of the program (it will be tested and compared to competitors on identical machines with identical languages)
• 3 points for the respect of the rules
• 4 points for an explanation

Jury :
Participations are rated on an equitable basis according to a common scale by a jury whose composition is as follows:

• Adriweb
• Critor
• Laurae
• Levak
• Lionel Debroux

When ? :
The contest starts Monday the 1st of April 2013 and finishs Sunday the 12th of May, 23h59 (GMT+1)

How ? :
To participate, candidates must send to the email address [email protected] :

• complete mailing address with first and last name
• a valid email address for contact
• the expected production (8xp, 83p, tns)
• any other information or file deemed useful by the candidate concerning its production

The e-mail correctly send is taken as an entry.

Lots :
Through our partnership with TI-France and Jarrety, the winners of the contest (one winner per category) will be rewarded with:

• 1st price: 1 calculator + 4 TI-Planet stickers
• 2nd price: 1 poster TI + 3 TI-Planet stickers
• 3rd price: 2 TI-Planet stickers

1st price in the Nspire category: a TI-Nspire CX (not CAS)
1st price in the TI-82/83/84 category : a TI-84 Pocket.fr

Complete rules:
The complete rules for this contest, legally registered to an usher, are available on
TI-Planet or the  UPECS website. (French)


See you soon on TI-Planet !

PS: I know I'm a bit late, because the contest has started...

Hello everyone,

I wanted to try thepenguin's TruSound, and I have two questions:

- The instructions say that Truspeed will give me the sample rate. But it says "2H". Does it mean 2 Hertz ?? 2 Hz is audible ?
- I heard about thepenguin's NyanMem, what does it do exactly, and can I use it to send larger sounds to the calc ?

Thanks for your answers.

Hey guys,

People from TI-Planet already know, I like to relook my calculators 
But in the french community, nobody cares
Excepted KermMartian with his two "ultimate calculators", I don't know anybody who has a beautiful tunned calc...

Is anyone there with an artist talent ?