Orders division or square root extraction and starts operation when chain calculations are
performed. The key lamp turns on when the key is touched.
Derives sum, product, quotient or square root (when touched after
Red equal key
Also derives product, quotient or square root in the case of
Used for entering
If numeral keys
are touched immediately after depressing one of the memory
keys(after touch the
key), the memory register is designated and
the memory function is performed for that memory
Decimal point key
Determines the decimal point position.
when touched after the
contents of all memory register are cleared.
Change sign key
Changes the sign of the displayed number.
Clear memory key
Clears the contents stored in the memory register specified by touching a numeral key.
Memory recall key
Summons onto the display panel the contents stored in memory register specified by
touching a numeral key
Memory minus key
Without multiplication or div ision function (in case x or
function is not memorized
in the machine before
key is touched)
Orders to subtract the contents in No.1 register from the contents stored
With multiplication or division function (in case x or
function is memorized in the
key is touched):
Orders multiplication, division or square root extraction (touched after
subtracts the product, quotient or square root from the contents stored in the specified