Hp 49g Graphing Calculator Manuel d'utilisateur Page 222

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Error on start up
If the message “Invalid Card Data” is displayed each time you turn the
calculator on, you need to initialize the calculator’s ports. This message is
displayed if you attempted to recover memoiy when you turned the
calculator on for the first time—see page 2-2—or if a port has become
corrupted.
To initialize the calculator’s ports:
1. Press®.
2. Highlight PINIT in the commands catalog.
3. Press (ENTER) or OK to place the command on tire command line.
4.
Press
(ENTER)
to run tire cormnand and initialize the ports.
Low memory
The calculator’s operations share memory with the objects you create.
Therefore the calculator may operate slowly if memory is low.
Tire calculator displays messages as memoiy becomes critically low.
These messages are discussed in the following three sections.
No room for last stack
If there is not enough memoiy to save a copy of the cuiTent stack or
history, No room for last stack is displayed when you press
ENTER.
Solution: this is a warning message only. The calculator will complete its
current operation, but the UNDO command will not be available. You
should delete unwanted objects from the stack to prevent this condition
continuing.
Page D-6 Troublehooting
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