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ARITHMETIC FUNCTION KEYS
S.
EJ.
lEI,
ffi:
Depression of anyone: of
these keys
tens
the
calculator what operation to perform with the next number entered.
During calculations, intermediate results are also displayed when these
keys are depressed.
EQUAL KEY
§: when the El key is depressed, the answer will appear on
the
display.
PERCENT KEY
IPS:
DepressiDn of this key causes the number un the
display to be
expressed as a percentage.
CHANGE SIGN KEY
El'3:0epressiDn of this key changes the sign of the displayed number.
To entet a negative number, enter the number first,
then depress
this
key.
REGISTER EXCHANGE KEY
~;Oepfession of this key exchanges the contents of the display (xl
register and the cQnstant (v} register.
CLEAR AND CLEAR ENTRY KEY
©:
Oepression of
this key performs the following functions:
1. Resets error or overflow indicator.
This dues
not
clear the display
or memory. Press
If}
ONCE.
2. Clears the displav register (wrong entry L Previous entries and the
arithmetic mode
set are
not
affected.
Press
©
ONCE.
3. Two successive dllpressions of the clear
[g
key will clear all
registares EXCEPT lhe memory register.
MEMORY OPERATION
Depression of the following keys perform the various memory
operations.
I.
Ii!ffi :
Adds the contents of the displey (Xl register to the
contents of the memory. The display (X) resister and all previous
operations are unaffected by thIs operation.
2.
1M3 ;
Subtracts the contents of the (Xl resister from the con-
rents of memory_ The (Xl resister and all previous operation are
unaffected by tbis operation.
S.
~
: Clears the memory tsets memory contents to zero) without
disturbing othercalcufator modes or resisters.
4.
.MBl ;
Recalls -the contents of memory to thE: display without
clearing the memory_
MEMORY INDICATOR
This indicator is a dot which wilt light in the-leftmost display position
whenever memory contents are
OOlHero.
NEGATIVE NUMBER INDICATOR
This !nditatot is located in the leftmost displav position and lights
whenve-r negative numbers
Of
cndit balances are displayed.
OVERFLOW (ERROR) INDICATOR
This indicator is located in the leftmost display position. Any answer
or subtotal exceeding eight digits to the left of the decimal point,
overflow indicator
"C'
lights and eight most
siqnfficant
digits are
displayed. The position of the decimal point in the overiloWlld displey
telts you how many digitS' areoll'erflowed.
For example, if the overfloWlld display readsC1234.5fl78, thadecimal
point indicates four overflowed
(counting
from the left). The actual
answer is
12345678oooD.
-
.
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