RPN Mode

ALG Mode

27% of 200

200

E27 %

200 *27 %=

200 less 27%

200

E27 %-

200 -27 %=

Calculations with STO and RCL

The store (s) and recall (R) operations work identically in ALG and RPN modes (see “Storing and Recalling Numbers” and “Doing Arithmetic Inside Registers and Variables” in chapter 2). The keystrokes are the same for simple storing and recalling and for doing arithmetic inside registers and variables.

When doing arithmetic in the display with values from storage registers and variables, remember to use RPN. Compare these keystrokes in RPN and ALG modes:

 

RPN Mode

ALG Mode

Store－2 x 3 in

2 &E3 *s 2 &*3 =s5

register 5

5

 

 

 

 

 

 

 

 

 

Find PV－2

 

 

 

 

 

 

 

 

 

 

R

 

 

R

 

 

 

 

 

-2=

 

2 -

 

 

Find PV less 2%

 

 

 

 

 

R

 

 

R

 

 

 

 

 

 

2 %-

 

-2%=

Find PMT x N

 

 

 

 

 

R

 

 

R

 

 

 

 

R

 

*R

*=

Chain Calculations－No Parentheses!

The speed and simplicity of calculating using RPN are apparent during chain calculations－longer calculations with more than one operation. The RPN memory stack (refer to appendix E) stores intermediate results until you need them, then inserts them into the calculation.

266 D: RPN: Summary

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