HP Forum Archive 11

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HP 28C - Disabling the beep? Message #1 Posted by Mike on 7 Apr 2003, 6:51 p.m. I've had my HP 28C for years, but it sat in a closet for a few of those years, unused. Now that I'm using it regularly again, I can't remember all the bells and whistles. I've got the Museum's CD to replace my lost manual, but I still can't find one piece of info: How do I disable the error beep? (For instance, if I hit DROP twice when there's only one entry on the stack, it'll beep once for the extra DROP.) Thanks, Mike

Re: HP 28C - Disabling the beep? Message #2 Posted by Chris Randle (UK) on 7 Apr 2003, 8:08 p.m., in response to message #1 by Mike On the 28S you set flag 51. Might be the same for the 28C.

Re: HP 28C - Disabling the beep? Message #3 Posted by Mike on 7 Apr 2003, 8:34 p.m., in response to message #2 by Chris Randle (UK) Yep, that's it! Thanks for pointing me in the right direction. I was thinking it was a key combination (like ON and "+" for the contrast).

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