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Controlling the Display
29
Engineering notation is selected by
pressing
a
~
followed
by
a
number key
.
In engineering notation
,
the first three digits
are
always
present
,
and
the number key
specifies
the number
of
additional
digits displayed
after
the
first
three
.
For example:
Press
Display
0.0000123451
0.000012345
a
~
O
112.3
-06
I Engineering notation display.
a
~
2
First three digits visible
and
power
of
lOis the proper mUltiple
of
three
.
112.345
-06
IThe number key
specifies
the
.
r e i
1
: -;
2
;-;
.3
;;-; 4~
50
- ;:-:
0
=---
--:::-
06
"
'1
number
of digits
displayed be-
yond
the first three.
Notice that because the first three digits
are always
present, the
greatest number of
additional
digits that can
be specified
in
engi-
neering notation is five.
Press
Display
I
12.345000
-06
1 Maximum number
of
digits
displayed.
'I
-:-
12
=-
.
-=-
34
7 .
5
::-:
0:-= 0-=-
0-
--=-
06
-
:-11 No
change
in
display.
1
12.345000
-06
1No change
in display
.
Rounding
of
displayed numbers in
ENG 5 and ENG 6
is
similar
to the
rounding of
numbers
in SCI7 and SCI8,
discussed earlier.
As with all
display
formats,
engineering
notation
display does
not
affect the
actual
number
as
it is held internally by the calcu-
lator,
but
only
alters
the
manner in which
the
number is displayed.
When
engineering notation
has been
selected,
the decimal point
shifts
to
show the
mantissa
as
units
,
tens
,
or
hundreds in order
to
ma
intain the exponent
of
10
as a
mUltiple
of
three
.
For
ex-
ample
,
mUltiplying the number now
in
the calculator by 10
causes
the decimal point to
shift
to
the
right
without altering
the
exponent of
10:
Press
a
~
o
100
Display
I
12.3
-06
I
LI.:.c
12
: ::. c
3
::.:
.
____
-0
~
6
~
1
Decimal point
shifts.
Powerof 10
remains
at
10-
6
•
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