The only thing I don't like about the 83/84 series is the screen width. I'm so used to my 128 pixel screen...I always felt a bit ripped off when I switched back.

As for the 89, I might upgrade eventually. If I end up making enough money this summer...

P.S. I did find my calculator; it was in my closet at home for whatever reason. Oh well. Now my little brother has something to use for math.

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-Ian

 

I bought the TI-89 Titanium for $100 used (in new condition though) and love it. It is essential for Calculus.

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Really? And here I planned to simply use mine at the grocery store!

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Yeah, get one if you can. I never got a Titanium, but one would've made short work on the tedious math problems they like to throw at you. And the powerful PrettyPrint feature is exclusive to TI-89 and higher.

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my dad had a had a calculator when he was in collage and he sayed it was the first calculator he had even used to do more than 4 digits. but i cant use it any more sence i am in eighth grade we do trig and his calculator takes a long time for it to process. about 30 seconds for a basic trig problem

 

I had a TI-85 for the longest time. I knew it inside and out and could almost use it blind folded. Then one tragic evening it slipped off of my stack of books at home, hit the counter, and did a double backflip into a full kitchen sink. It was extracated quickly and open case surgery was performed to get all the water and residue out but it was all in vein. I still miss that calculator to this day.

I ended up replacing it with a TI-89 (long before the Titanium version was available) and it has been a fantastic calculator. Its ability to symbolicly solve complex equations (imaginary components) saves me so much time when working on control systems. Type in equation, hit solve, done; as opposed to 2-3 pages of calculations.

 

Since notebook computers are getting pretty small like the ASUS EEE (HP & Dell have introduced nice tiny subnotebooks too)
I don't carry a calculator with me much and I used to use MathCAD for equation solving. Although TI & HP emulators exist they are not the best solution on a computer as the interface sucks IMO. Any suggestions for good windows math software that doesn't cost and arm and a leg?

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Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com

 

I picked up a TI-89 (regular) at a church sale for 15 bucks, that was a good day =) Not that I dislike Z80s but it's heads above a TI-86. The 86 is only an 8 bit processor at 6mhz. The TI-89 68000 is a 32bit processor and depending on the hardware revision runs at 10-16mhz. (And can be overclocked)

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It's quite expensive unless you get the student version but Maple is extremely powerful once you get the hang of using it.

Math Software for Engineers, Educators & Students | Maplesoft

 

This is kinda off topic but would any of you happen to know how to unfreeze a TI calc. I've tried to reset and the garbage dump. Would there be like a cap that crapped out or something. I have quite a few 83, 84 plus, 84 plus SE, 89, and 89 titanium that are frozen. If you can help me out, I would greatly appreciate it.

 

See section 9.1 on clearing TI calcs.
http://www.technicalc.org/tifaq/?main.htm

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I built a small hand held one time that had a mini-compiler that allowed you to write and store programs into Flash. I used the Intel 80l188eb, an 80 pin SQFP embedded processor and Intel 2800 BXT (top boot) flash. You had to program it in machine code though. Never got around to the translator for the assembler mnemonics's. I built it so long ago that I have it stored in ORCAD SDT. If your interested I can fish it out for you. I still have the BIOS stored for it too. In fact it also has a DB9 connector so that you could write programs in assembler on the PC and shoot them into the unit and try them out and if they worked I could just burn them in. I have all that software too.

 

Hey Mikebits...I got your request but I think a pop up blocker stopped me from being able to respond.

 

Mikebits, I tried everything that it said on that page and nothing worked but now it seems like it's not frozen but just really really really slow. Like I press a button and it takes about 10 seconds for it to react. What do you think would cause something like that to happen?

 

How is a graphing calculator essential for calculus? They don't manipulate derivatives or integrals for you and any number crunching can be done by a scientific calculator. Mine was of absolutely no help in any of my math classes in high school and university.

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