Appendix D: Continuous Memory - HP -33E Owner's Handbook Manual

Appendix D
Continuous Memory
(HP-33C Only)
When you turn off your calculator, the following information is retained:
m All programs that are loaded into the calculator.
m Contents of the eight storage registers.
m Display status (FIX, SCI, or ENG, and number of displayed
digits).
Numbers in the stack, the LAST X register, trigonometric mode status
(DEG, RAD, or GRAD), and pending subroutine returns are not pre-
served when you turn the calculator off. Regardless of where you stopped
in a program, the calculator returns to line 00 (top of program memory)
when you turn it on again.
Executing the self-check ((s10], [ENTERY)) does not clear program
memory, storage registers, or display setting.
Continuous Memory requires that the batteries be keptin the calculator.
If the low powerindicator appears in the display, turn your calculator off
immediately and connect it to an ac outlet or insert a new battery pack.
Continuous Memory requires that batteries be replaced as quickly as
possible. Normally you have a minimum of 5 seconds to change the
batteries. Leaving the batteries out of the calculator for extended periods
or allowing the batteries to discharge completely will result in loss of the
information in Continuous Memory.
If you drop or traumatize your calculator, or if power to the Continuous
Memory is interrupted whether the calculatoris off or on, the contents of
program memory and the data storage registers may be lost. If this
occurs, when the calculator is then turned on, the display will show
Pr Error. To restore the display, ensure that the battery is charged, or
connect the ac adapter/recharger, and press any key.
CAUTION
Switching off the HP-33C during execution of either a pro-
gram or a function may clear oralter instructions in program
memory and data in the storage registers.
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