HP 48g Graphing Calculator User Manual
Page 395
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
■ Libraries offer faster access to the variables used by applications.
■ You can designate variables used in applications as “hidden”
(unnamed) variables, which avoids cluttering the library’s menu.
Each library is identified two ways:
m A library identifier, which has the form : porti number, where
number is a unique number associated with the library. If you press
r^f
LIBRARY
1 PORTS and the menu key for the port where you
stored the library, the library number appears in the menu.
■ A library name, which is a sequence of characters. If you press
fr-RfLIBRARYl
in the directory where you attached the library or any
of its subdirectories, the library name appears in the menu.
The ability to create libraries is not built into the HP 48. Normally,
they are created on a computer and downloaded to the HP 48 via
a cable or plug-in card. If you are interested in creating libraries,
contact the HP Electronic Information Service described on the inside
back cover of this manual.
1. Install the library in a port:
■ For an application card library, turn off the HP f8 and insert the
card into port 1 or 2.
■ For a RAM-based library, store it in port memory.
2. Attach the library (see below). Some libraries are “auto-attaching”
and some must be manually attached. You can attach only one
library to each directory—except you can attach any number to the
HOME directory. (See also the documentation that comes with the
application card or RAM-based library for any other information
about attaching the library.)
To use a library, it must be installed in a port and attached to a
directory in user memory. The attachment may happen automatically
when you install an application card—or you may have to do it
yourself.
T
d c
* '
l
.1
IfLrar/ire |C's!.rt rrtemc't';:
1. Put the library object on the stack. (Notice its library number and
name.)
2. Entef the port number for storing the library. If you use port 0, the
library is always available, even if you remove plug-in cards. If
28
Libraries, Ports and Plug-In Cards 28-7