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Operational Description
92
THE CALCULATOR.
Any arithmetic calculation consists of two numbers (called operands)
and an arithmetic operator (+, —, X, or ). On paper, you would write 2 X 3 as:
2X3=
This calculation is accomplished by using three registers in your HP-01 calculator:
1. A register that holds the first operand (we'll call this the X-register).
2. A register that holds the operator (the F-register).
3.
A register that holds the second operand (the Y-register).
Now, let's look at how the HP-01 performs this calculation. Begin by pressing Q twice to clear
the calculator.
Press
Registers
Display
F
X
Y
006
o
[l
o]
o
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