Calculator Feature Description - ELCOM Euro-2100 User Manual

© Elcom, s. r. o.
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Calculator feature description

Implemented functionality
The built-in calculator is able to perform these
operations on real numbers:
- addition
- subtraction
- multiplication
- dividing
Maximum precision is 13 valid numbers.
The maximum range overflow (±1,79x10308)
error is not handled.
Keyboard operation
You can toggle the calculator functionality
of the ECR using the [CALC] (key (a special
round button on the top edge of the keybo-
ard).
Individual operations are realised using fol-
lowing keys:
PLU – addition
DPT – subtraction
MULT – multiplication
MODE – dividing
TOTAL
– displays result
CLEAR – initialises the calculator (ECR
enters the state before calculator has been
used)
Entering and editing numbers:
[1...9] – enter number
[PERIOD] – enter decimal separator
[EAN] – invert sign (positive sign is not dis-
played)
[VOID] – deletes the last entered number
It's possible to enter up to 14 digit signed num-
ber, including decimal separator. Single sign
(i. e. sign entered without a number) is igno-
red. The calculator retains the last performed
operation and it could be repeated using the
TOTAL key.
Euro-2100
Calculator display
After the ECR is switched into calculator
mode, the bottom display row shows „Calcu-
lator".
Entered numbers are shown in the top display
row; result is displayed similarly.
The current operation sign (+, -, *, /) is dis-
played in front of the „Calculator" text in the
bottom row.
Examples:
Display shows after pressing 16 + 45:
Display shows after pressing TOTAL:
Display shows after pressing TOTAL:
While the ECR is in the calculator mode, the
customer display remains empty.
Cash register characteristics
Calculation
+
Calculation
+
Calculation
+
16
45
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