HP 50G, User Manual

Page: 117 / 887

Page 2-57
Use the up arrow key
—
to select the sub-directory MANS and press
@@OK@@
. If
you now press
„§
, the screen will show the contents of sub-directory
MANS (notice that variable A is shown in this list, as expected):
Press
$
@INTRO@
`
(Algebraic mode), or
$
@INTRO@
(RPN mode) to return to
the INTRO directory. Press
„¡
@@OK@@
to produce the list of variables in
{HOME MANS INTRO}. Use the down arrow key (
˜
) to select variable R ,
then press
@@COPY@
. Use the up arrow key (
—
) to select the HOME directory,
and press
@@OK@@
. If you now press
„§
, twice, the screen will show the
contents of the HOME directory, including a copy of variable R :
Using the history in Algebraic mode
Here is a way to use the history (stack) to copy a variable from one directory to
another with the calculator set to the Algebraic mode. Suppose that we are
within the sub-directory {HOME MANS INTRO}, and want to copy the contents
of variable
z1 to sub-directory {HOME MANS}. Use the following procedure:
‚
@@z1@
K
@@z1@
`
This simply stores the contents of z1 into itself (no change
effected on z1 ). Next, use
„§`
to move to the {HOME MANS} sub-
directory. The calculator screen will look like this: