Calculated Industries 8509 Pocket Reference Manual - — 5
P
ocket
R
efeRence
G
uide
— 5
i
Inch Key ─ enters or converts to
inches. Entry can be whole or decimal
number. Also used with the / key for
entering fractional inch values (for
example, 9 i 1 / 2). Repeated
presses during conversions toggle
between fractional and decimal
inches.
/
Fraction Bar Key ─ used to enter
fractions. Fractions can be entered as
proper (1/2, 1/8, 1/16) or improper
(3/2, 9/8).
m
Meter Key ─ enters or converts to
meters.
Convert Key Functions
Ç
Convert Key
─ used with the
dimensional unit keys to convert
between dimensions, the
project keys
to calculate
material quantities, or with other
keys to access special functions.
Ç –
Change Sign (+/-)
─ toggles
displayed value to positive or
negative.
(cont'd)
Ç ÷
Square root (
√¯
x )
─ finds
square root of value in display.
Ç x
Value Squared (x
2
)
─ finds
square of value in display.
Ç %
Pi (
π
)
─ constant 3.141593.
Memory
Ç +
M+
─ adds or stores a value in
the semi-permanent memory (for
example, 1 5 0 Ç +).
Semi-permanent means the
value is cleared when the
calculator is turned off.
Ç –
Ç +
M-
─ subtracts a value from the
semi-permanent memory
(for example, 1 5 0 Ç –
Ç +
subtracts 150 from the
memory).
Ç =
Mr
─ recalls memory value (for
example, if 150 has been stored
in memory, pressing Ç = will
display 150).
Ç o MC
─ clears memory value.
PRG8509E-B.indd 4
4/28/2010 10:10:55 AM