18 Section 1: Getting Started
overflow occurs in a running program, execution halts and the overflow display
appears.
Underflow. If the result of a calculation is a number with a magnitude less than
1.000000000 × 10
−99
, zero will be substituted for that number. Underflow will
not halt the execution of a calculation or a running program.
Memory
Continuous Memory
The Continuous Memory feature in your HP-10C retains the following in the
calculator, even when the display is turned off:
• All numeric data stored in the calculator.
• All programs stored in the calculator.
• Display mode and setting.
• Trigonometric mode (Degrees, Radians, or Grads).
When the HP-10C is turned on, it always “wakes up” in Run mode (PRGM
annunciator cleared), even if it was in Program mode (PRGM annunciator
displayed) when last turned off.
If the calculator is turned off, Continuous Memory is preserved for a few
minutes when the batteries are removed. Data and programs are preserved
longer than the calculator’s status is. Refer to appendix C for instructions on
changing batteries.
Resetting Memory
If at any time you want to reset (entirely clear) the HP-10C Continuous
Memory, do the following:
1. Turn the HP-10C off.
2. Hold down the - key, and press =.
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