HP 20S and HP 21S: Minimum and Maximum
of a Data Set
The
input/output format is the same for both minimum and maximum:
1. Enter the
initial data point, press XEQ A.
2. Enter subsequent
points, press XEQ B.
3. To find the
minimum or maximum, depending on which program you use, press XEQ C.
The key codes
for both the HP 20S and HP 21S for these programs are the same. Caution: this won’t always be the case. The HP 20S has a row dedicated to conversions
while the HP 21S has a row dedicated to statistics.
HP 20S and HP 21S: Minimum
|
STEP
|
CODE
|
KEY
|
|
01
|
61, 41, A
|
LBL A
|
|
02
|
21, 1
|
STO 1
|
|
03
|
61, 26
|
RTN
|
|
04
|
61,
41, B
|
LBL
B
|
|
05
|
21,
0
|
STO
0
|
|
06
|
31
|
INPUT
|
|
07
|
22,
1
|
RCL
1
|
|
08
|
61,
42
|
X≤Y?
|
|
09
|
51,
41, 1
|
GTO
1
|
|
10
|
71
|
Clear
[ C ]
|
|
11
|
61,
26
|
RTN
|
|
12
|
61,
41, 1
|
LBL
1
|
|
13
|
51,
31
|
SWAP
|
|
14
|
21,
1
|
STO
1
|
|
15
|
71
|
Clear
[ C ]
|
|
16
|
61,
26
|
RTN
|
|
17
|
61, 41, C
|
LBL C
|
|
18
|
22,
1
|
RCL
1
|
|
19
|
61, 26
|
RTN
|
Example:
Data Set: 9, 3, 6, 5, 7, 2, 4
Minimum: 2 (stored in R1)
HP 20S and HP 21S: Maximum
|
STEP
|
CODE
|
KEY
|
|
01
|
61, 41, A
|
LBL A
|
|
02
|
21, 1
|
STO 1
|
|
03
|
61, 26
|
RTN
|
|
04
|
61,
41, B
|
LBL
B
|
|
05
|
21,
0
|
STO
0
|
|
06
|
31
|
INPUT
|
|
07
|
22,
2
|
RCL
2
|
|
08
|
51,
31
|
SWAP
|
|
09
|
61,
41
|
X≤Y?
|
|
10
|
51,
41, 2
|
GTO
2
|
|
11
|
71
|
Clear
[ C ]
|
|
12
|
61,
26
|
RTN
|
|
13
|
61,
41, 2
|
LBL
2
|
|
14
|
21,
2
|
STO
2
|
|
15
|
71
|
Clear
[ C ]
|
|
16
|
61,
26
|
RTN
|
|
17
|
61, 41, C
|
LBL C
|
|
18
|
22,
2
|
RCL
2
|
|
19
|
61, 26
|
RTN
|
Example:
Data Set: 9, 3, 6, 5, 7, 2, 4
Maximum: 9 (stored in R2)
This is two of
my favorite programs I posted this year.
I plan to make a version for the HP 12C soon. They are simple and versatile.
Until next
time, can you believe it’s June?
Eddie
This blog is
property of Edward Shore, 2017.
