Operation Manual

TI-83 Plus General Information 754
Accuracy Information
Computational Accuracy
To maximize accuracy, the TI-83 Plus carries more digits internally than
it displays. Values are stored in memory using up to 14 digits with a two-
digit exponent.
•
You can store a value in the window variables using up to 10 digits
(12 for
Xscl
,
Yscl
,
Tstep
, and
q
step
).
•
Displayed values are rounded as specified by the mode setting with a
maximum of 10 digits and a two-digit exponent.
•
RegEQ
displays up to 14 digits in
Float
mode. Using a fixed-decimal
setting other than
Float
causes
RegEQ
results to be rounded and
stored with the specified number of decimal places.
Xmin
is the center of the leftmost pixel,
Xmax
is the center of the next-to-
the-rightmost pixel. (The rightmost pixel is reserved for the busy
indicator.)
@
X
is the distance between the centers of two adjacent pixels.
•
In
Full
screen mode,
@
X
is calculated as (
Xmax
N
Xmin
)
à
94. In
G
.
T
split-screen mode,
@
X
is calculated as (
Xmax
N
Xmin
)
à
46.
•
If you enter a value for
@
X
from the home screen or a program in
Full
screen mode,
Xmax
is calculated as
Xmin
+
@
X
…
94. In
G
.
T
split-
screen mode,
Xmax
is calculated as
Xmin
+
@
X
…
46.