Olivetti Logos 664B, Instructions Manual

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ENGLISH 3
Keyboard Description
NP P
NP
Printer selection switch
Printer is activated only when [-] or [#/D] key is pressed.
1
P
Printer is activated as long as calculator is turned on.
0 5 9 Rounding selector
0 Absolute round down.
5
Final result is rounded up if the 1st digit not to be printed is 5 or more,
and rounded down if the 1st digit not to be printed is 4 or less.
2
9 Absolute round up.
A 0 2 3 4 F Decimal Point selector
A
Add mode. The decimal point is automatically placed before the last
two digits in addition and subtraction.
0,2,3,4 For multiplication and division, the decimal point insertion depends on
the result of calculation.
For addition and subtraction, the decimal point is inserted in all entries.
For all results, the number is rounded to the last decimal place
preceding that designated. For example, a number at the 3rd decimal
place is rounded to the 2nd place.
3
F Automatic floating point for decimally accurate computing. Decimal
point is entered at the desired position, and automatically shifted to the
right for integers less than 14 digits.
•
GT Grand Total switch
•
Calculation without Grand Total.
4
GT Any total made with [*] key is automatically accumulated in memory.
The GT totalizer can be recalled by pressing the [M*] key.
•
IC Item Count switch
•
Calculation without Item Count
5
IC Item Count. Number of entries using keys [+], [-], [M±] and [M
≡
] will be
counted. The counter is incremented for [+] and [M±], and decremented
for [-] and [M
≡
]. Result is printed on the left when [
◊
], [*], [M
◊
] or [M*]
keys are used.
6 [
↑
] Paper feed key
Advances the paper roll.
7 [COST] Cost key
Used to enter Cost factor in a Cross Profit Margin calculation.
8 [SELL] Sell key
Used to enter Selling price in a Cross Profit Margin calculation.
9 [MARGIN] Margin key
Used to enter desired Margin in a Cross Profit Margin calculation.