Hp 48g Graphing Calculator Manual de usuario Pagina 389

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28
’an
Ports and Piiyg-^n Cards
Port Memory and Plug-In Card Slots
Port memory, also referred to as independent memory, is structured
differently than user memory:
User memory can be subdivided into directories; port memory
cannot.
Variables (global) in user memory are active and can move around
physically in memory. Variables (port) in port memory are inactive
and maintain a consistent physical location in memory.
Port memory contains two kinds of objects:
m Backup objects. Backup objects are regular objects converted to an
“inactive” form suitable for port memory.
H Libraries. Libraries are collections of named objects that act to
extend the built-in command set. They must be stored in port
memory and attached to a user directory in order to be usable. You
can execute a named object from a library but not view or edit it,
much as you can use a built-in command, but not edit it.
To display the menu of objects stored in a port:
28
1. Press (^(LIBRARY) PUK I S .
2. Press the menu key associated with the port you wish to view.
To display the menu of libraries accessible from the current
directory:
Press |T»1(LIBRARY j.
Libraries, Ports and Plug-In Cards 28-1
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