R-4 Reference information
8. FOR CONSUMER TRANSACTIONS IN AUSTRALIA
AND NEW ZEALAND: THE WARRANTY TERMS
CONTAINED IN THIS STATEMENT, EXCEPT TO
THE EXTENT LAWFULLY PERMITTED, DO NOT
EXCLUDE, RESTRICT OR MODIFY AND ARE IN
ADDITION TO THE MANDATORY STATUTORY
RIGHTS APPLICABLE TO THE SALE OF THIS
PRODUCT TO YOU.
CAS
The HP 40G is packaged with a computerized algebra system
(CAS). Refer to the CAS User Manual for further
information.
Resetting the HP 39G/40G
If the calculator “locks up” and seems to be stuck, you must
reset it. This is much like resetting a PC. It cancels certain
operations, restores certain conditions, and clears temporary
memory locations. However, it does not clear stored data
(variables, aplet databases, programs) unless you use the
procedure below, “To erase all memory and reset defaults”.
To reset using
the keyboard
Press and hold the >21@ key and the third menu key
simultaneously, then release them.
If the calculator does not respond to the above key sequence,
then:
1. Turn the calculator over and locate the small hole in the
back of the calculator.
2. Insert the end of a straightened metal paper clip into the
hole as far as it will go. Hold it there for 1 second, then
remove it.
3. Press >21@. If necessary, press >21@ and the first and last
menu keys simultaneously.
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