HP 48g Graphing Calculator - Manual (Page 61)

LAST Variable Storage (E): Contains the three temporary
variables~TAST CMD, LAST STACK, and LAST ARCC-that
save copies of the previous commands, stack, and arguments so
that they can be restored if needed. To save memory, you can
disable these variables (see page TIO).
Local Variables Storage (F): Contains any local variables created
by currently-executing programs. Local variables exist only while
the program executes.
HOME (G); Contains all named (stored) objects. You can
organize and control HOME using the Variable Browser (see page
5-5). Most of the remainder of this chapter describes HOME.
Port 0 (H): Contains backup objects and libraries that you have
stored in Port 0,
HOME: Variables and Directories
The HOME section of memory works much like a disk does on a
personal computer. Each named object in HOME, or HOAIE
vanable,
is analogous to a file on a computer disk.
Like files, HOME variables let you store and retrieve information using
meaningful names. For example, you can store the acceleration of
gravity, 9.81 m/s^, into a variable named
G and then use the name
to refer to the variable’s contents. Unless you specify otherwise, all
variables you create (by name) will be HOME variables.
Also, like files, HOME variables can be arranged hierarchically into
directories, and organized to suit your particular needs. Note that
directory names are stored in variables.
Only one directory (the current directory) can be active at a time.
The master directory (or root directory) for the HP 48 is called the
HOME directory and is, until you change it, the current directory.
The path of the current directory (the current path) is shown in the
status area of the display.
Memory 5-3