Franklin BES-1840 Water System User Manual


 
27
Making Calculations
1. Press until you see the
calculator.
2. Type a number.
Note:
q-p
will type numbers 0-9
automatically. You can type up to 10
digits. To type a decimal, press
g
(.).
To change the sign of a number, press
z
(+/-).
3. Press a math function key.
4. Type another number.
5. Press
enter
.
To repeat the calculation, press
enter
again.
6. Press
clear
to clear the current
calculations.
Using the Calculator
Press...
a
(1/x)
d
(x
2
)
f (%)
s
(
x
)
z
(+/-)
To Calculate...
reciprocals
squares
percentages
square roots
negative numbers
Using the Calculator Memory
1. In the Calculator, make a
calculation or type a number.
2. To add the number on the
screen to the number stored in
memory, press x
(M+). To
subtract the number on the
screen from the number stored
in memory, press c
(M-).
M indicates the number is stored in
memory.
3. To retrieve the number from
memory, press v
(MR).
4. To clear the memory, press b (MC).
Using the Calculator