The Museum of HP Calculators

Rule of 78's for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the Lend/Save/Lease Solution Book. This program was entered and uploaded by Tony Duell.

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "RULE"
 02 "N ?"
 03 PROMPT
 04 STO 00
 05 "K ?"
 06 PROMPT
 07 STO 01
 08 "PMT ?"
 09 PROMPT
 10 STO 02
 11 "FC ?"
 12 PROMPT
 13 STO 03
 14 RCL 00
 15 RCL 01
 16 -
 17 1
 18 +
 19 RCL 03
 20 *
 21 RCL 00
 22 X^2
 23 LASTX
 24 +
 25 /
 26 RCL 00
 27 RCL 01
 28 -
 29 *
 30 STO 04
 31 "REB"
 32 XEQ 09
 33 RCL 02
 34 RCL 00
 35 RCL 01
 36 -
 37 *
 38 RCL 04
 39 -
 40 "BAL"
 41 LBL 09
 42 "=$"
 43 ARCL X
 44 PROMPT
 45 RTN
 46 END

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