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17-2 Variables and memory management
Storing and recalling variables
You can store numbers or expressions from a previous
input or result into variables.
Numeric Precision A number stored in a variable is always stored as a 12-
digit mantissa with a 3-digit exponent. Numeric precision
in the display, however, depends on the display mode
(Standard, Fixed, Scientific, Engineering, or Fraction). A
displayed number has only the precision that is
displayed. If you copy it from the HOME view display
history, you obtain only the precision displayed, not the
full internal precision. On the other hand, the variable
Ans always contains the most recent result to full
precision.
To store a value 1. On the command line,
enter the value or the
calculation for the result
you wish to store.
2. Press
3. Enter a name for the
variable.
4. Press .
To store the results
of a calculation
If the value you want to store is in the HOME view display
history, for example the results of a previous calculation,
you need to copy it to the command line, then store it.
1. Perform the calculation for the result you want to store.
3 8 6
3
2. Press to highlight to the result you wish to store.
3. Press to copy the result to the command line.
4. Press .
hp40g+.book Page 2 Friday, December 9, 2005 1:03 AM