14. Memory Total Key.
Prints and clears the
Memory.
15. Paper Advance
.
16. Times Key.
To multiply, enter the first
number (multiplicand) and depress the Times
key; then enter the second number (multiplier)
and depress the Equals, Percent, Memory Plus,
Memory Minus, Times or Divide key to obtain a
result.
The multiplicand entry is retained as a constant
until you depress the Times, Divide or
Clear/Clear Entry key.
17. Equals Key.
Completes multiplication and
division.
18. Divide Key.
To divide, enter the number to
be divided (dividend) depress the Divide key.
Then enter the second number (divisor) and
depress Equals, Percent, Memory Plus, Memory
Minus, Times or Divide key to obtain a result.
The divisor is retained as a constant until you
depress the Times, Divide or Clear/Clear Entry
key.
19. Backspace Key.
Deletes right most
character of a live entry, moving the remaining
display value one character to the right.
20. Clear/Clear Entry Key.
(a) If the last key
depressed was numeric, depression of the
Clear/Clear Entry key will automatically clear
the entry. (b) Depressing the Clear/Clear Entry
key again or after a function key will cause a
zero amount and “C” audit to print on the tape
and will automatically clear pending calculation
and the Accumulator.
21. Percent Key.
The Percent key automatically
converts a number to a percent and completes a
percentage calculation when used with the
Times or Divide key. In percentage calculations
using multiplication, depressing the Plus or
Minus key immediately after the result has
printed, will perform add-on or discount
calculation respectively.
22. Markup.
From a known cost of goods and
desired gross margin, this key automatically
calculates and prints the amount of Markup and
the selling price.
23. Percent Change/Gross Margin Key.
Automatically compares any two amounts,
prints the actual numerical difference between
them, then calculates and prints the percent
change.
24. Tax 2.
Enter a rate and press tax 2. The tax
rate will be automatically applied to total or
pending calculation.
25. Grand Total Key.
Depressing this key
causes the contents of the Grand Total memory
to be printed and/or displayed and then clears
the Grand Total memory.
26. Tax 1.
Enter a rate and press tax 1. The tax
rate will be automatically applied to total or
pending calculation.
27. Change Sign Key.
Changes the sign of the
entered or calculated value currently in the
display.
On-Off Switch.
Located on the side of the
calculator.
Decimal System.
With the 2020PlusX, entries
may contain any combination of whole and
decimal digits, up to a maximum of 12 digits.
Internally there is a 12-digit calculating
capacity. The decimal setting may be changed
between calculations without affecting the
accuracy of a number entered or accumulated.
Add Mode.
Set the Decimal Selector at Add
Mode (+) and the last two digits in any entry
followed by depression of the Plus, Minus,
Memory Plus or Memory Minus key will
automatically be accepted as decimals.
Exception: if an actual decimal entry is made,
the calculator will accept and print it, overriding
the Add Mode (+) setting for that entry.
Error/Overflow.
When an error or overflow
condition occurs, the word Error is printed on
the tape. the error/overflow is cleared by
depressing the Clear/Clear Entry key.
Automatic Punctuation.
On the tape and
display a comma automatically punctuates every
third whole digit to the left of the decimal point.
Underflow.
In a result or total containing a
combination of whole and decimal digits, the
decimal point will shift right, regardless of
decimal setting in order to show the 12 most
significant digits.
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