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HP HP-11C User Manual

HP HP-11C
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54
Section
3:
Numeric
Functions
Example
To
Calculate
Keystrokes
Display
Permutation
Example:
10
items
in
arrangements
of
3
at
atime.
10
([ENTER
10.0000
3
720.0000
Combination
Example:
10
items
in
sets
of
3
at
atime.
10
[ENTER
10.0000
3
120.0000
Statistics
Functions
Random
Number
Generator
The
HP-11C’s
random
number
generator
uses
either
an
auto-
matically
stored
seed
(zero),
or
a
seed
you
key
in,
to
initiate
a
uniformly
distributed
pseudo-random
number
sequence
in
the
range
0
<r
<1.*
Because
of
Continuous
Memory,
the
sequence
will
continue
until
a
new
initial
seed
is
stored.
Random
Number
Seed.
To
initiate
a
new
random
number
sequence
at
any
time,
place
a
new
seed
in
the
random
number
generator
by
keying
in
any
number
0
<
n
<1'
and
pressing
(RAN#].
To
generate
a
random
number,
simply
press
[f][RAN#].
The
new
random
number
will
appear
in
the
displayed
X-register.
([f]
affects
the
stack
in
the
same
way
as
recalling
a
number
from
a
storage
register.)
The
newly
generated
random
number
also
becomes
the
seed
for
the
next
random
number
in
the
current
sequence.
Whenever
Continuous
Memory
is
reset,
or
when
a
power
failure
occurs,
the
random
number
seed
is
set
to
zero.
(Repeated
use
of
the
same
value
for
a
random
number
seed
will
produce
repetitions
of
the
same
random
number
sequence.)
*
Passes
the
spectral
test
(Knuth,
Vol.
2).
t
If
a
number
whose
magnitude
is
>
1
is
used
as
a
seed,
the
decimal
point
in
the
stored
version
of
the
number
will
be
shifted
to
the
left
of
the
first
significant
digit.
For
example,
123.0,
12.3,
and
0.123
would
all
be
stored
as
0.123
by
[STO](f][RAN#].

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HP HP-11C Specifications

General IconGeneral
BrandHP
ModelHP-11C
CategoryCalculator
LanguageEnglish

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