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6-2 Entering and Evaluating Equations
By comparing the checksum and length of your equation with those in the example,
you can verify that you've entered the equation properly. (See "Verifying Equations"
at the end of this chapter for more information.)
Evaluate the equation ( to calculate V ):
Keys: Display: Description:
or the current equation in
line 2
Selects Equation mode, shown by
the EQN annunciator.
Begins a new equation,
turns on the A..Z annunciator so
you can enter a variable name.
_
types
_
Digit entry uses the "_" entry
cursor.
π_
ends the number.
D
π _
types .
π_
π
Terminates and displays the
equation.
Shows the checksum and length
for the equation, so you can check
your keystrokes.
Keys: Display: Description:
value
Prompts for variables on the right–
hand side of the equation. Prompts
for D first; value is the current value of
D.
_
Enters 2
1
/
2
inches as a fraction.
value
Stores D, prompts for L; value is
current value of L.
Stores L; calculates V in cubic inches
and stores the result in V.