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Storing and Recalling Numbers and ALPHA Strings
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Your HP-41C comes standard with 63 storage registers. You can add memory
modules to increase the number of registers to a total of 319.
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In the HP-41C, program memory also uses storage registers for the
storage of program instructions. In fact, you can control the amount of
memory space that is allocated to both data storage registers and program
memory. You will learn how to control these allocations later in this
section. When you first turn the HP-41-C on, it has 17 primary storage
registers and 46 registers of program memory.
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The HP-41C data storage registers allow you to manually store and recall
numbers and ALPHA strings for use in later calculations or in programs. These
registers are independent of the automatic memory stack and LAST X registers.
Like most functions, you can use these storage registers either from the
keyboard or as part of a program. All information in the storage registers
is preserved by the Continuous Memory of the calculator.
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The diagram below shows all potential data storage registers. This
diagram shows data storage registers in their maximum memory allocation.
Remember, unless you have added additional memory modules, your HP-41C has
up to 63 primary storage registers. The addresses of the extended storage
registers are indicated by the numbers (100) through (318).
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Automatic
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Memory
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Stack
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T
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Z
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ALPHA
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Y
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X
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LAST X
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Primary
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Data Storage
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Registers
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R00
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R01
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R02
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·
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·
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R62
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R63
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R64
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·
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·
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R99
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Extended
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Data Storage
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Registers
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R(100)
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R(101)
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R(102)
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·
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·
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R1
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R1
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R1
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R1
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R1
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R1
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·
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·
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R(318)
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