Page B-3
Main key functions
Keys
A
through
F
keys are associated with the soft menu options that
appear at the bottom of the calculator’s display. Thus, these keys will activate
a variety of functions that change according to the active menu.
The arrow keys,
—˜š™
, are used to move one character at a
time in the direction of the key pressed (i.e., up, down, left, or right).
The
APPS
function activates the applications menu.
The
MODE
function activates the calculator’s modes menu.
The
TOOL
function activates a menu of tools useful for handling variables
and getting help on the calculator.
The
VAR
function shows the variables stored in the active directory, the
STO
function is used to store contents in variables.
The
NXT
function is used to see additional soft menu options or variables
in a directory.
The
HIST
function allows you access to the algebraic-mode history, i.e.,
the collection of recent command entries in that mode.
The
EVAL
key is used to evaluate algebraic and numeric expressions, the
apostrophe key [ ‘ ] is used to enter a set of apostrophes for algebraic
expressions.
The
SYMB
activates the symbolic operations menu.
The delete key
ƒ
is used to delete characters in a line.
The
y
x
key calculates the
x
power of
y
.
The
x
key calculates the square root of a number.
The
SIN
,
CO
S, and
TAN
keys calculate the sine, cosine, and tangent,
respectively, of a number.
The
EEX
key is used to enter power of tens (e.g.,
5
×
10
3
, is entered as
5V3
, which is shown as
5E3
).
The
+/-
key changes the sign of an entry, the
X
key enters the character X
(upper case).
The
1/x
key calculates the inverse of a number, the keys
+
,
−
,
×
, and
÷
,
are used for the fundamental arithmetic operations (addition, subtraction,
multiplication, and division, respectively).
The
ALPHA
key is combined with other keys to enter alphabetic characters.