Sharp EL-W506T vs. Sharp EL-W516T

[lrdheat]

Complicating the comparison is the different versions offered in different countries. The TI 30X Pro MathPrint, offered in Europe, is a faster version of the 36X Pro offered in the U.S. The European version accepts equations with a larger number of characters than the 36X Pro as well, offers stats for 50 lines of data. The CASIO 991 EX has various versions that offer slightly different function sets as well. The biggest difference to me between the CASIO’s and TI’s is CASIO loses history when turned off, and TI allows functions to be placed in f1 and f2, allowing for use elsewhere in the calculator such as in integration or other analysis. The 991EX requires the function to be rewritten for each use elsewhere in the calculator. The 991 EX can accept longer lists for statistical work, but loses this data upon turning unit off.