04-07-2003, 06:51 PM
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