HP Forum Archive 19

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Key presses and running programs Message #1 Posted by Mike T. on 15 July 2009, 5:05 p.m. I'm after a bit more information on the way the HP67, HP29, and HP25 machines behave when a key is pressed while a program is executing. The HP33 and HP34 both simply stop executing the program and stop at the current instruction (even if it is a pause) and otherwise ignore the keystroke. Unfortunately I can't check the behaviour of the other models myself. I believe that an HP67 will execute the keystroke if pressed while a pause instruction is executing but can't remember what happens if a key is pressed while a program is running. I did have some information but can't find my old notes at the moment. I suspect that behaviour of the HP29 may be the same as the HP67 as they are both similar but I have no idea what happens on an HP25. I'd really like to know if my assumptions are correct and what really happens on these models both when a key is pressed while a program is running (including a label key or GSB) and when a key is pressed during a pause instruction. It might be interesting to compare this to the behaviour of current models like the HP20b so see which scheme 'won'.. Thanks Mike T.

Re: Key presses and running programs Message #2 Posted by Don Shepherd on 15 July 2009, 10:18 p.m., in response to message #1 by Mike T. Quote: It might be interesting to compare this to the behaviour of current models like the HP20b so see which scheme 'won'.. I don't think the 20b is programmable, nor does it have a solver.

Re: Key presses and running programs Message #3 Posted by Mike T. on 19 July 2009, 7:40 p.m., in response to message #1 by Mike T. Any HP29C owners out there..?

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