EasyManua.ls Logo

Casio FP-200 - Page 46

Casio FP-200
156 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
P-Pn CONTROL CHART
P-
and
Pn-charts
are
used
to
obtain
data
about
defective
parts
at
various
manufacturing
plants.
The
P-chart
is
used
when
the
number
n
of
pieces
to
be
checked
is
variable.
The
Pn-chart
is
used
when
the
number
n
of
pieces
to
be
checked
is
constant.
The
former
is
a
control
chart
repre-
senting
the
percentage
of
defects,
while
the
latter
is
a
control
chart
representing
the
number
of
defects.
This
program
writes
data
to
and
reads
data
from
CETL,
and
processes
the
data
for
output
to
a
plotter-printer
in
the
form
of
control
charts.
When
the
program
is
started,
it
asks
whether
or
not
the
appropriate
data
is
already
stored
in
CETL.
If
the
data
is
not
yet
stored
in
CETL,
you
should
switch
the
MODE
switch
to
CETL
and
input
the
dat
...
Since
CETL
is
described
in
detail
in
the
CETL
Reference
Manual,
data
input
to
CETL
is
only
briefly
discussed
here.
First,
input
the
file
name,
the
number
of
records,
and
the
number
of
items
using
the
N
command.
Input
6 as
the
number
of
items,
and
the
number
of
data
items+
l as the
number
of
records.
Next,
input
data
for
each
item
as
shown
in
List
1.
Use
special
care
in
inputting
data
under
'Expression.'
The
number
O
immediately
after
FL
(see List 1)
represents
a file
number.
When
a
different
file
is
specified,
change
Oto
the
associated
file
number.
As a
prompt
for
data
input,
the
screen
displays
"1-1
?".
The
first
figure
represents
the
record
number
and
the
second
figure
represents
the
item
number.
Since
the
data
to
be
input
comprises
only
the
number
of
pieces
to
be
inspected
(item
2)
and
the
number
of
defective
pieces
(item
3),
you
should
only
input
the
relevant
data.
For
the
prompts
for
irrelevant
data,
simply
press
the
,..J.key.
(See List l
.)
In
the
final
record,
input
the
previously
calculated
total
number
of
inspected
pieces
p::n)
and
the
total
number
of
defective
pieces
(2::Pn).
This
is
the
reason
why
the
actual
number
of
records
+ 1
should
be
input
as
the
number
of
records.
The
number
of
groups
should
be
20
to
40.
To
check
that
the
data
has
been
input
correctly,
use
the
T
command
to
output
the
contents
of
data
cells
to
the
display
unit
or
printer.
If
an
error
is
found,
use
the
J
command
for
correction.
Groups
arc
classified
according
to
the
lot
number,
etc.
It
is
recommended
that
the
grouping
be
done
such
that
the
number
of
pieces
inspected
is
50
to
100
per
group
and
the
number
of
defective
pieces
(Pn)
per
group
is
3
to
4
on
the
average.
It
should
again
be
noted
that
the
number
of
records
10
be
input
is
the
.ictu;!I
number
of
50

Other manuals for Casio FP-200

Preview: Service Manual
Service Manual73 pages

Related product manuals