I have purchased a second-hand 22s after having lost my first one. The one I have now is an earlier model than what I used to have. The problem: whenever I press the "C" key (the clear key), if there is no action for the calculator to take (clearing a register, exiting a menu, turning off, etc.), the calculator freezes and must be reset. Other than that, it seems to work fine. In short, if I press the "C" key when I really don't need to, the calculator quits. Is this a normal quirk of older models? Is it the start of a progressing problem? Do I just have a calculator with a unique personality?
Thanks
CJ