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How I have configured my HP 15c for financial duties

As I have mentioned before, most of my duties involve financial calculations in an industrial environment.

The calculator I prefer among all, because of its simplicity (no menus) and its portability (fits in my jacket and occupies very limited space in a crowded desk, is the HP15.

Here is a dump of the program memory:

Let's start with an oldie, in the version that appears in the Advanced Functions handbook - no change needed. It uses the A to E keys in User mode, following the standard n -i- PV- PMT-FV. One key for entering the data and placing the program pointer in the right place; then R/S to execute:

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I will continue in the next few blogs with the rest of the memory. For the sake of engineer futility, I have left space enough for a 3x3 + 3 equation system if some time was needed - and it has not been the case so far !!

Time Value of Money
1 LBL A
2 STO 1
3 R/S
4 GSB .1
5 LST X
6 R/S
7 RCL*0
8 RCL 5
9 X<>Y
10 -
11 LST X
12 RCL+3
13 X=0?
14 GTO .0
15 /
16 CHS
17 TEST 4
18 GTO .0
19 LN
20 RCL 6
21 LN
22 /
23 STO 1
24 RTN
25 LBL B
26 STO 2
27 R/S
28 ,
29 2
30 ENTER
31 EEX
32 CHS
33 3
34 CF 1
35 SOLVE .3
36 GOTO .4
37 GOTO .0
38 LBL .4
39 EEX
40 2
41 *
42 STO 2
43 RTN
44 LBL C
45 STO 3
46 R/S
47 GSB .1
48 GSB 2
49 CHS
50 STO 3
51 RTN
52 LBL D
53 STO 4
54 R/S
55 1
56 STO 4
57 GSB .1
58 RCL 3
59 GSB 2
60 X<>Y
61 /
62 CHS
63 STO 4
64 RTN
65 LBL E
66 STO 5
67 R/S
68 GSB .1
69 RCL+3
70 RCL+7
71 CHS
72 STO 5
73 RTN
74 LBL .1
75 SF 1
76 1
77 RCL 2
78 /
79 LBL .3
80 STO 8
81 1
82 STO 0
83 +
84 TEST 4
85 GOTO .0
86 STO 6
87 F?0
88 STO 0
89 RCL 1
90 CHS
91 Y^X
92 STO 7
93 1
94 X<>Y
95 -
96 X=0?
97 GOTO .0
98 RCL*0
99 RCL 4
100 RCL/8
101 *
102 F?1
103 RTN
104 RCL+3
105 LBL 2
106 RCL 5
107 RCL*7
108 +
109 RTN
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More about: HP 15c, hp ATMEL, hp15c, hp15c+

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