The Museum of HP Calculators


Sigma-T and AOU 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 Earth Sciences Solution Book. This program was ported to the HP-41C by reading with the HP-41C card reader and the card reader may be required for operation of this program. 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
Download Data Set (.d41) See Note under Data Sets (below.)

Data Set

Currently, we know how to transfer the .d41 files to an HP-4C1 with Tony Duell's LIF Utilities for linux. Other users can enter the register listings below by hand. If you determine how DOS users can transfer these files, please let me know. The data should be saved to a magnetic card.

RR000 = -2.047420000E-6
RR001 = +2.060660000E-4
RR002 = -1.233820000E-2
RR003 = +9.924880000E-2
RR004 = +5.605660000E-8
RR005 = -6.633000000E-6
RR006 = +5.402360000E-8
RR007 = -2.885420000E-6
RR008 = +2.715880000E-4
RR009 = -5.928510000E-3
RR010 = +4.311450000E-5
RR011 = +8.042960000E-1
RR012 = -1.140000000E-2
RR013 = -1.734292000E+2
RR014 = +2.496339000E+2
RR015 = +1.433483000E+2
RR016 = -2.184920000E+1
RR017 = -3.309600000E-2
RR018 = +1.425900000E-2
RR019 = -1.700000000E-3
RR020 = +2.765000000E+1
RR021 = +3.405500000E+1
RR022 = +2.000000000E+0
RR023 = +2.183047081E+1
RR024 = +4.545347280E+0
RR025 = +8.931000000E+1

Program Listing

LINE  KEYS
 01 LBL "STAOU"
 02 LBL 10
 03 LBL A
 04 XEQ 09
 05 STO 20
 06 STOP
 07 LBL 11
 08 LBL B
 09 XEQ 09
 10 STO 21
 11 STOP
 12 LBL 13
 13 LBL D
 14 RCL 20
 15 ENTER
 16 ENTER
 17 ENTER
 18 100
 19 -
 20 *
 21 4.4 E6-
 22 *
 23 +
 24 STO 22
 25 ENTER
 26 ENTER
 27 ENTER
 28 RCL 00
 29 *
 30 RCL 01
 31 +
 32 *
 33 RCL 02
 34 +
 35 *
 36 RCL 03
 37 +
 38 *
 39 ENTER
 40 RCL 04
 41 RCL 22
 42 *
 43 RCL 21
 44 RCL 06
 45 *
 46 +
 47 RCL 05
 48 +
 49 RCL 22
 50 *
 51 RCL 21
 52 RCL 07
 53 *
 54 +
 55 RCL 08
 56 +
 57 RCL 22
 58 *
 59 RCL 09
 60 +
 61 7P<>S
 62 RCL 00
 63 RCL 21
 64 *
 65 +
 66 RCL 22
 67 *
 68 RCL 01
 69 +
 70 RCL 21
 71 *
 72 +
 73 RCL 02
 74 +
 75 7P<>S
 76 STO 23
 77 XEQ 09
 78 STOP
 79 .999975
 80 RCL 23
 81 *
 82 .025
 83 -
 84 STO 22
 85 XEQ 09
 86 STOP
 87 RCL 22
 88  E3
 89 /
 90 1
 91 +
 92 XEQ 09
 93 STOP
 94 LBL 01
 95 7P<>S
 96 RCL 20
 97 273.15
 98 +
 99 STO 20
100 RCL 03
101 RCL 04
102 RCL 20
103 /
104 100
105 *
106 +
107 RCL 20
108 100
109 /
110 LN
111 RCL 05
112 *
113 +
114 RCL 06
115 RCL 20
116 *
117 100
118 /
119 +
120 RCL 07
121 RCL 08
122 RCL 20
123 *
124 100
125 /
126 +
127 RCL 20
128 100
129 /
130 X^2
131 RCL 09
132 *
133 +
134 RCL 21
135 *
136 +
137 E^X
138 STO 24
139 7P<>S
140 RCL 20
141 273.15
142 -
143 STO 20
144 RCL 24
145 RTN
146 LBL 12
147 LBL C
148 XEQ 09
149 STO 22
150 XEQ 01
151 RCL 22
152 -
153 RCL 25
154 *
155 XEQ 09
156 STOP
157 LBL 14
158 LBL E
159 ENTER
160 RCL 25
161 /
162 STO 22
163 XEQ 01
164 RCL 22
165 -
166 STOP
167 LBL 17
168 LBL c
169 RCL 25
170 /
171 STOP
172 LBL 19
173 LBL e
174 43.5
175 /
176 STOP
177 LBL 15
178 LBL a
179 FS? 00
180 GTO 00
181 SF 00
182 1
183 RTN
184 LBL 00
185 CF 00
186 0
187 RTN
188 LBL 09
189 FS? 00
190 7PRTX
191 RTN
192 STOP
193 END

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