Reply
Thread Tools Display Modes
#1
Old 08-26-2013, 11:29 AM
Guest
Join Date: Jul 2005
Location: N of Denver & S of Sanity
Posts: 12,171
Getting the TI-84 to do it MY way

One problem with the TI-84 is that even in normal mode, it shows answers with an absolute value less than 0.001 in scientific notation. The problem is if the answer is 0.00045, I want it to show up in my students' calculators like that and not 4.5e-4. How can I get the TI-84 to display the data like that.*



*If the answer is it can't because fuck you HP knows what you want to do better than you do then that is a major design flaw in the "standard" calculator.
Advertisements
#2
Old 08-26-2013, 12:57 PM
Guest
Join Date: Aug 2010
Location: Hoboken
Posts: 1,187
This might help. Or maybe not.

Last edited by mcgato; 08-26-2013 at 12:57 PM.
#3
Old 08-26-2013, 01:04 PM
Guest
Join Date: Dec 2012
Location: Colorado
Posts: 2,602
I don't think you can really blame HP for problems with your TI-84. But I could be wrong.
#4
Old 08-26-2013, 01:42 PM
Guest
Join Date: Jul 2005
Location: N of Denver & S of Sanity
Posts: 12,171
Quote:
Originally Posted by aNewLeaf View Post
I don't think you can really blame HP for problems with your TI-84. But I could be wrong.
I think I can when THEY program it to not show data in normal mode even if the calculator is set to normal mode.
#5
Old 08-26-2013, 01:53 PM
Charter Member
Join Date: May 2000
Location: SW Side, Chicago
Posts: 41,334
Quote:
Originally Posted by Saint Cad View Post
I think I can when THEY program it to not show data in normal mode even if the calculator is set to normal mode.
I could be wrong, too, but I don't think Hewlett Packard had much to do with the Texas Instruments TI-34 calculator, either.
#6
Old 08-26-2013, 02:25 PM
Guest
Join Date: Jul 2005
Location: N of Denver & S of Sanity
Posts: 12,171
DOH!!!!

[tinfoil hat]It's a conspiracy of all the large electronics companies[/th]
#7
Old 08-26-2013, 02:34 PM
Guest
Join Date: Jul 2009
Posts: 12,056
their tentacles reach everywhere.
#8
Old 08-26-2013, 02:56 PM
Guest
Join Date: Feb 2011
Posts: 3,674
Are you sure it's not in Engineering mode? I say this because you say that numbers > 0.001 appear normally.

From what I have read, 0.00045 "shouldn't" appear as 4.5E-4 in normal (as opposed to scientific or engineering) mode; it should only force scientific mode if the number requires more than 10 digits to display properly.

Also make sure it's in "float" mode, rather than a fixed number of digits.
#9
Old 08-26-2013, 04:30 PM
Guest
Join Date: Oct 1999
Location: I'm right here!
Posts: 8,858
On the Ti-84 Plus C Silver Edition (which we just got, so the instructions aren't lost yet), you push the button <mode>, then can select between normal, sci (scientific) and eng (engineering). You want normal.

Last edited by ZenBeam; 08-26-2013 at 04:30 PM.
#10
Old 08-26-2013, 05:14 PM
Guest
Join Date: Jul 2005
Location: N of Denver & S of Sanity
Posts: 12,171
Quote:
Originally Posted by Saint Cad View Post
One problem with the TI-84 is that even in normal mode, it shows answers with an absolute value less than 0.001 in scientific notation.
OK yes I check to make sure it in NORMAL MODE. Even in NORMAL MODE, the calculator puts answers within 0.001 absolute value in scientific notation even if the calculator is in NORMAL MODE.

Just to clarify, the calculator is in NORMAL MODE when it does this.

So stop telling me to put it in normal mode. That doesn't answer my question.
#11
Old 08-26-2013, 07:08 PM
Guest
Join Date: Oct 1999
Location: I'm right here!
Posts: 8,858
I was playing around with ours some more, and I can confirm what Saint Cad is saying (I didn't have enough zeros earlier). The cutoff is 0.001. In normal mode, numbers 0.001 or higher will display in normal notation. Numbers slightly lower, e.g. 0.0009999999, will display in exponential notation. This happens even if the number of digits is set small enough that it rounds off, displaying 1E-3. Since changing the display mode works correctly for numbers bigger than 0.001, I'd guess there's no way to make smaller numbers like 0.00099 display that way.

Last edited by ZenBeam; 08-26-2013 at 07:09 PM.
#12
Old 08-26-2013, 08:57 PM
Member
Join Date: May 2000
Location: Cloud Cuckoo Land
Posts: 28,043
Quote:
Originally Posted by Saint Cad View Post
*If the answer is it can't because fuck you HP knows what you want to do better than you do then that is a major design flaw in the "standard" calculator.
No, the answer is "fuck you, RTFM." Pages 20-22. If you want to see five decimal places, set the Float setting for five decimal places. That may help, or you may get sick of all of your calculations being to five decimal places. You'll have to try it yourself. My TI-86 is still MIA, I fixed a TI-83 for my daughter then she gave it to a friend, and if you'll excuse me I will go back to fixing my TI-81, which is the first of most of the TI-8x line.
#13
Old 08-26-2013, 09:46 PM
Member
Join Date: May 2000
Location: Cloud Cuckoo Land
Posts: 28,043
Well, that went faster than I expected, since it sat in my trunk/boot for five years.

No, "float" is just two letters longer than "fix" without the extra points for using X and without actually working, like it does on Casio calculators. Time to teach the kiddies scientific notation, and if they are too young and ignorant for that a TI-84 is wasted on them, it having been the height of technology in 1996.
#14
Old 08-26-2013, 09:53 PM
Guest
Join Date: Dec 2012
Location: Colorado
Posts: 2,602
Make 'em use slide rules.
#15
Old 08-26-2013, 10:44 PM
Member
Join Date: May 2000
Location: Cloud Cuckoo Land
Posts: 28,043
Fuckin' A. Where will they be when their batteries die?
#16
Old 08-27-2013, 09:41 AM
Charter Member
Moderator
Join Date: Jan 2000
Location: The Land of Cleves
Posts: 72,292
Quote:
Make 'em use slide rules.
If I ever find myself teaching high school math, I literally and honestly do intend to require slide rules, at least for a week or two. Even if they're not practical as a tool, in the age of calculators, they're still great for teaching things like properties of logarithms and justified precision.
#17
Old 08-27-2013, 06:59 PM
Member
Join Date: May 2000
Location: Cloud Cuckoo Land
Posts: 28,043
Quote:
Originally Posted by Chronos View Post
justified precision
Was ist das? Is it like how the most significant digits are the bigger ones and as you move to the right you should care less and less what they are, but a calculator shows you all of them as if they were equally important? Or is it how, with a slide rule, you need an idea of what the answer should be so you know where to put the decimal point?
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:15 AM.

Copyright © 2017
Best Topics: random skype request idol franchise 80s mustang travel c clubhouse pow kroger holiday meals jo jo laine sending medicine overseas how indians supple boobs mephistopheles meaning cats balls bra burner low dose mdma oil light flashes eskimo wife lending bobo tennis shoes spelled it wrong chorizo casing tapi modem doc gerbil's world aristocrat joke nolan ryan steroids vietnamese wedding attire seinfeld helloooo fedex change address 40k alignment chart bluestar airlines male tabbies crow pet mercury cyanide tablets bartleby dogma cia physician drinking lysol excelsis meaning assisi loop for humans best johnny cash albums my cat doesn't like to be held how much money do barbers make a year bald men are gross jump start car how long to keep running how to pick a file cabinet lock andrea gail found shipwreck adjustable headrest for cars why can't i add money to my paypal account moving to olympia washington blowjob on school bus gfci outlet without ground six finger guitar player call from three digit number martin lawrence snl 1994 create your own civilization game can a president fire a vice president tying up my girlfriend cask and cream vs baileys amex number of digits highest possible bowling score pull out nose hair how to kill superman without kryptonite uses for ball peen hammer pawn shops that sell tvs songs with 3/4 time signature most state legislatures are bicameral because say bacon in a british accent m5 industries net worth comcast net device upgrade