|Re: programmable scientific calculators|
Message #2 Posted by Vincent Weber on 15 June 2006, 9:07 a.m.,
in response to message #1 by cliff
HP use to have much better machines than the TI-68 for equation-based programming: the scientific 27S (Pioneer family), retired in the early 90s, and the 19BII (champion family, scientific AND business), retired around 2002. Let's also mention the business-only 17BII in the Pioneer family.
These calcs allow you not only to program an equation and solve for any variable using an advanced menu; they also feature real programming capabilities: IF-THEN-ELSE statements, Summation, list access, and even loops and intermediate variables, with the use of the (undocumented) LET and GET functions. Sadely, you can't have subroutines or user-defined function, and indirect access is read-only (with the use of lists). Should these limitations be removed, you would have an easy-to-program calc which would have nothing to envy to BASIC computers.
TI produced a better version of the TI68: The TI-67 Galaxy, which also allowed conditionals and branching. Difficult to find...