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Decimal point placement
The decimal
pointers
are
position-
ed
at
the
register windows.
They
are displaceable and
provided
with
an "eve".
Position
the
decimal
pointe'.
so
that
the figure
in
the
"e1-e"
marks
the
number
of
de-
cimals.
Example
ol
decimal
point
posi-
ticning in
division:
33.769
_
|
)
1s.14
How
division is
done
with
Facit
NTK
is
described on page
17.
After
the
dividend
(33.768) has been
set
up
in
rhe
product
reqister, set
ont
the
decimal
point.
-
The
"eye"
shows
1
1.
After
the
divisor
(28.14)
has been set
up
and
moved
over
to
the
left, the
decimal
point
is
read
off for this
number.
Note
that the
number
now has
two
noughts
after
it,
so
that the
sett-
ir,g up
register
shows
28.1400.
Tliese
noushts
are
also
counted
as
decimals,
i,hi.h *.un,
that
there
are 4 in all. The
di{ference
between
11
and
4
is
7.
The mul-
tiplier
register decimal
points
musc
therefore be
positioned
so
that
the "eye"
shows 7.
The
result
ol
the
division is
1.2.
t
f
\
Rwles
t'or decirnal
point
Addition
and subtraction.
?osition the
decimal
point
identically
in
the
setting
and
in
the product
register. Set.up
all
numbers
with
the
same
number
of
decimals
so
that they
come
right
relative
to
the
decimal
point
in
the setting
register'
lvlultiplication" The number
of
decimals
in
the
product
register
is
to
be
the
sar-ne
as
the
sum
of
the
decimals
in
the
serting
up
and
riilltiplier
registers.
Mark
the
position
of
the
decin-ral
point
in
the product
register according
to rule
before
starting
calculation.
Division.
The number
of
decimals
in
the
multiplier
register is
to
be
the
same
as
the
difference between
the
number
of
decimals
in
the product
and setting
up
registers.
You can
avoid
unnecessary
calculating
work
if you
determine
the
position
of
the decimal
point
and
how
many
decimals are
needed
in
the
answer
(quotient;
before
you start
to
divide.
See
also the example
at
the
top
of
the
page.
t3
i
t
4
t
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