|Re: HP-28S Syntax Errors|
Message #8 Posted by Luiz C. Vieira (Brazil) on 15 July 2012, 5:09 p.m.,
in response to message #7 by William N Strew
I am glad to see that Gerson has already helped you the way you needed. That's totally good news, indeed!
I just would like to add that I had an HP28C for some time, but I must admit it was not time enough to use its features 'by heart', I mean when you no longer need to remember which key sequence does this or that, instead the subconscious part of your brain just takes control of your fingers and Voilą! It is done! And I gladly say it did not happen because there are some small differences in some modes and key responses from the hP28C to the HP28S that surely may cause some of these syntax errors. While in program entry mode, both the HP28S and the HP28C add extra spaces to the left of the input character - or sequence of characters, if a function/command key is pressed - as an aid to consistency entry syntax, and this consistency changes with the context if you change to algebraic mode while in program mode. The problem is that the HP28S does not react the same way to some keys as the HP28C when changing the entry mode while in program entry mode, which is done with the [ALPHA] key, when pressed more than one time in a sequence (cyclic entry mode selection). This way you can enter an algebraic object or a sequence with algebraic entry mode inside of a program.
I had to reconfigure my briefly trained brain to the new concepts in the HP28S, but later the HP48S added some extra, new, different key responses. Now I cannot remember them at all, must try the keys, look at the display and correct the command line prior to enter it, if applicable...
Edited: 15 July 2012, 5:23 p.m.