
Section 5: Storing and Recalling Numbers and ALPHA Strings74


Remember that because of the Continuous Memory of the HP41C, all information
in the calculator is retained, even when the calculator is turned off.


Use CLRG now to clear all currently allocated storage
registers (R00 through
R16).




Storage Register Arithmetic


Arithmetic can be performed upon the contents of all storage registers by
executing STO followed by the arithmetic function followed
in turn by the register address. For example:


Number in Xregister is added to the contents of register
R01, and the sum is placed into
R01. The display execution form
of this is ST+.

Number in Xregister is subtracted from the contents of register
R02, and the difference is placed into
R02. The display execution form
of this is ST–.

Number in Xregister is multiplied by the contents of register
R03, and the product is placed into
R03. The display execution form
of this is ST×.

Number in R04 is divided by the
number in the Xregister, and the quotient is placed into
R04. The display execution form
of this is ST÷.



When storage register arithmetic operations are performed, the HP41C prompts
for the register address, and the answer is written into the selected storage
register. Unless specified as a register address, the stack remains unchanged.


Storage Register Arithmetic and the Stack


You can also specify the stack or LAST X registers for storage register
arithmetic by simply pressing
· (decimal point) and X, Y, Z, T,
or L (for LAST X) as the register address. For example, place the number 50
in the Xregister and add the number to itself:


