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HP-41C Extensions
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The system capabilities of the HP-41C can be greatly expanded by connecting
it to one or more peripheral devices. Available as system extensions, these
devices enable you to customize your computational system to suit your
particular requirements. You can supplement the standard features of the basic
HP-41C with:
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Four input/output (I/O) ports are provided on the top of the HP-41C for
interfacing with these devices. A detailed description of capabilities
and operation is provided with each device. But to give you a feel for the
remarkable power you can achieve by adding to your basic HP-41C calculator,
lets look briefly at some of the devices available.
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CAUTION
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Always turn the HP-41C off before inserting or removing any plug-in
extensions or accessories! Failure to turn the HP-41C off could
damage both the extension and the calculator.
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HP 82106A Memory Module
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With up to 63 registers of program memory or 63 registers of data storage,
or any combination, the basic HP-41C can swallow a whale of a computational
task. But suppose your application requires even more program or data
storage capacity. To meet your needs, Hewlett-Packard developed the
HP 82106 A Memory Module. Each module contains an additional 64 registers
that can be allocated as program memory or storage registers, or any
combination. You can add four memory modules to your HP-41C system,
providing you with a whopping 319 registers. (That’s 1000 to 2000
lines or program memory.)
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Just as the internal memory of the HP-41C, the additional memory contained
in each memory module can be allocated in various combinations between program
and data storage. And all of the additional memory, just like the internal
memory of the HP-41C, is Continuous Memory. As long as the memory module
is plugged into the HP-41C, its contents are preserved for your later use,
even while the HP-41C is turned off.
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