Olivetti Summa 21 Instrucciones De Uso página 19

(13) Memory Recall and Clear / INTEREST
R
M :
C
INTEREST: Pressed after a 10-key input, the value entered is considered as
(14) Memory Plus / MONTH
M+:
INTEREST: Pressed after a 10-key input, the value entered is considered as
(15) Memory Minus / PAYMENT
M-:
PAYMENT:
(16) Numbers, double zero and decimal point
Set the number to be entered. Any numeral over 12 digits will be ineffective.
Decimal
point:
(17) Non-Add/Date
Prints the displayed content with the "#" sign on left most side of the paper roll
and does not perform calculation.
(18) Subtraction
To subtract, enter the first number and press the [-] key. Then enter the second
number and press [=] or other keys, as necessary to obtain the result. If do not
enter number, the default value is 0. If the [=] key is pressed repeatedly, it will
perform sequential subtract calculations.
(19) Addition
To add, enter the first number and press the [+] key. Then enter the second
number and press [=] or other keys, as necessary to obtain the result. If do not
enter number, the default value is 0. If the [=] key is pressed repeatedly, it will
perform sequential add calculations.
ENGLISH
Pressing this key once displays the result and /or prints it out if set
to Print mode. Pressed twice clears the memory contents.
Loan Interest. However if Amount, Month, and Payment are
entered beforehand or any of the three are modified beforehand,
press this key to calculate / recalculate the Loan Interest.
Adds an amount to memory. If there is a live calculation pending
(× or ÷), the answer will be calculated and added to Memory.
Number of Months to settle the Loan. However if Amount, Interest
and Payment are entered beforehand or any of the three are
modified beforehand, press this key to calculate / recalculate the
Number of Months.
Subtracts an amount from memory. If there is a live calculation
pending (× or ÷), the answer will be calculated and the amount
will be subtracted from memory.
Pressed after a 10-key input, the value entered is considered as
Payment. However if Amount, Interest and Months are entered
beforehand or any of the three are modified beforehand, press
this key to calculate / recalculate the Payment.
When used more than once in one numeral, only the first decimal
point will be considered as effective. If the Non-add/date key is
used immediately after the Decimal Point in one numeral, the
Decimal Point will act as a separator, e.g. date separator.
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