Wednesday, January 19, 2011

You Can't Keep A Good Calculator Down


Folks, I have exciting news for you tonight. I have just resurrected 5 TI-83+ calculators from the dead on my kitchen island this evening. After a short surgical procedure, I am happy to report that all five calculators are alive and doing well.

You see, although my school can afford fancy new red turf for our football field, we don't seem to have the funds to replace any of our aging calculators. I've been nursing my classroom set of 30 ever since I inherited them shortly after being hired at "Paradise" high school.

In case you don't know how to restore dead calcualtors, here are three steps to try. Try the steps in order. Sometimes I get lucky and step one will work and I won't need to use the other steps.

1. Remove all four batteries. Press and Hold the [ON] key for 10 seconds. Then put the batteries back into the graphing calculator and turn on. May need to readjust screen’s contrast again.

2. Remove one of the AAA batteries. Press and hold the [CLEAR] key. While holding [CLEAR], reinsert the AAA battery and then turn the calculator on. The calculator should display the message "RAM Cleared". Release the [CLEAR] key and then press it one more time to remove the message.


3. Remove one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL], reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now". Follow the instructions for the TI-83 family or TI-84 Plus family to reinstall the calculator operating system.



If steps 1-3 don't work, it is time to resort to step #4 and that is what I did tonight.


4. Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.


Now, drum roll please. . .. . Here are my calcualtors after surgery! Tonight I was successful in restoring 5 calculators that I thought I was going to have to scrap!!!



5 comments:

Pissed Off said...

I'll share this post with my AP. He's a piece of work, but it will help kids.

Mr. W said...

I will pass this one on as well.

By the way, do you allow calculators in all of your classes all year?

For my Algebra 1, Geometry, and Algebra 2 classes I take away their calculators second semester to get them ready for...that's right the CSTs where calculators aren't allowed.

Are they allowed in Texas for state testing?

Mrs. H said...

Mr. W, we use graphing calculators from day 1 in all of our classes. They are allowed on all our state assessments.

cheesemonkeysf said...

Holy crap! You might very well win a Nobel Prize in calculator medicine for this. I wish to salute you for your ingenuity and persistence!

Mimi said...

Yay. Good work!

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