Tuesday, May 24, 2016

TI-30Xa: Logarithm Bug Corrected (From Datamath Calculator Museum)

On top of Datamath's web page (http://www.datamath.org/,  Retrieved May 24, 2016), the website announced that a logarithm bug for several Texas Instruments has been addressed and corrected.  There is a big box on top the page which will you lead you to the article.  

This affects the basic level (one-line display) scientific calculators, from the TI-35X and TI-36X from the early 1990s to TI-30Xa of the 2010s.  The bug is present when you calculate the natural logarithm of numbers between 1.000000001 and 1.01.

Datamath reports that the bug has been fixed in 2015; hence the TI-30Xa and TI-30 ECO RS (the latter not in TI's United States product lineup) manufactured 2015 and after are working properly.

In testing the two TI-30Xa's I have (manufactured in 2011 and 2013, I think), it seems that they have the bug.  I might buy a new revision to test it.  

Update (5/25/2016):  I purchased a new TI-30xa today (manufacture number? L-0216M, the package had a date of 2015) to test whether the bug has been resolved.  I put this one and an older version (K-0513K – 2013) to the test.  To get the full decimal result, I put both calculators in scientific mode.  Judging by these results, the bug appears to have been resolved. 

A comparison between TI-30Xas.  The left is the 2016 (new) manufacture, the right is the 2013 (old) manufacture.  The results on the left are correct.  


This blog is property of Edward Shore, 2016

No comments:

Post a Comment

Retro Review: Texas Instruments TI-68

Retro Review:  Texas Instruments TI-68 Company:  Texas Instruments Years:  1989 - 2002 Type:  Scientific, Formula Programmin...