The Museum of HP Calculators


Cibachrome Reciprocity Correction for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the HP-67 Photo Dark Room 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 "CIBACH"
 02 LBL 10
 03 LBL A
 04 7DSP0
 05 LOG
 06 STO 01
 07 XEQ 14
 08 RCL 08
 09 STO 03
 10 RCL 07
 11 STO 02
 12 STOP
 13 RCL 03
 14 STOP
 15 LBL 11
 16 LBL B
 17 1.279
 18 *
 19 RCL 01
 20 +
 21 STO 01
 22 10^X
 23 RTN
 24 LBL 12
 25 LBL C
 26 XEQ 14
 27 RCL 07
 28 RCL 02
 29 -
 30 RTN
 31 LBL 13
 32 LBL D
 33 RCL 08
 34 RCL 03
 35 -
 36 RTN
 37 LBL 14
 38 LBL E
 39 6.4-
 40 ENTER
 41 15
 42 RCL 01
 43 *
 44 +
 45 RCL 01
 46 ENTER
 47 *
 48 3
 49 *
 50 -
 51 STO 07
 52 1.12
 53 ENTER
 54 1.08
 55 RCL 01
 56 *
 57 +
 58 RCL 01
 59 ENTER
 60 *
 61 7.2
 62 *
 63 -
 64 STO 08
 65 1.48
 66 RCL 01
 67 X<=Y?
 68 RTN
 69 RCL 01
 70 20
 71 *
 72 CHS
 73 16.5
 74 +
 75 STO 08
 76 RTN
 77 STOP
 78 END

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