Group and Grand Total
GT as it is often referred to and abbreviated,
enables one to add several columns of figures
and get a grand total of all column totals.
Certain calculators only provide the ability to
achieve the total and are not capable of provid-
ing a grand subtotal.
ref # Key
The ref # key is used to place an identifying
number or date on the tape to help identify a
listing or calculation. Typical uses would be to
enter the invoice number and date prior to
checking the listing or invoice. In times past, the
operator would typically write identifying num-
bers such as date or invoice number on the
tape to link the tape to the source document.
Backspace key
The backspace key is designed to remove dig-
its erroneously entered one digit at a time. For
all Monroe calculators the back space key will
perform this function on live entries (entries not
completed with a depression of a function
key). Since many results are used for further
calculations, preventing the back space key
from removing a digit saves an operator from
reentry of such figures if the backspace key
were inadvertently pressed.
Item Count (N-Count)
This feature counts the number of items in a
column of figures or the number of lines calcu-
lated on an invoice. The 8130X / 8145X has intel-
ligent item count, meaning the calculator knows
the difference between correcting an error or an
intentional addition of a negative figure. If one
were to add, 1, 2, 3 and determine after entry of
3 and depression of the + key that 3 should
have been 4, the operator would simply touch
minus which takes out the 3. The operator
could then enter 4, press plus and then total.
The total is 7. The item count is 3. Certain cal-
culators have attempted to provide intelligent
item count. They may have a selection n+/- for
example. This is not an intelligent item count. It
increments the count for positive entries and
decrements the count for negative entries. It is
easy to see that this count does not reflect the
actual numbers of entries legitimately made.
Automatic Averaging
From the discussion of Item count above, auto-
matic averaging provides the ability to divide
the total by the number of items to determine
the average for the items. This feature is of lit-
tle use, if as described above the item count is
apt to be incorrect. Intelligent Item count for the
8130X / 8145X makes automatic averaging
worry free.
Underflow
Underflow is a feature designed to assist the
operator in obtaining the most significant
result. If the decimal selector was set at 6 for
example and the number of whole digits (on a
12 digit display) was 8, the decimal point would
be shifted to show 8 whole digits and only 4
decimal places in the answer. If a unit were not
equipped with this feature, an error would be
created and the operator would have to move
the decimal selector to accommodate the
result.
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