Key Guide
Key Guide
+
At the Entry screen, types an aster-
isk to stand for a series of letters in
a word.
*Hold down the first key while pressing the second.
Calculator Keys
A–P
Types numbers.
Q(1/x)
Calculates a reciprocal.
S(
√
x)
Calculates a square root.
D(x
2
)
Squares a number.
F(%)
Calculates a percentage.
G(.)
Inserts a decimal point.
H(+), J(-) Adds, subtracts, multiplies
K(x), L(÷) or divides numbers.
W(+/-)
Changes the number on the
screen to a negative or positive
number.
X(
M
+)
Adds the number on the screen to
the number stored in memory.
C(
M
–)
Subtracts the number on the
screen from the number stored
in memory.
V(
MR
)
Recalls the number stored in
memory.
B (
MC
)
Clears the memory.
➤
About Screen Illustrations
Some screen illustrations in this
User’s Guide may differ slightly
from what you see on screen.
This does not mean that your
BFQ-450 is malfunctioning.
➤
Help is Always at Hand
You can view a help message at
any screen by pressing AIDE.
Use the direction keys to read the
message. To exit help, press
ARR.
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