Datexx TrackBack DD-7722 Owner's Manual

®
Editing Business Calculator
See what you're doing, review your
numbers, and make corrections
Welcome to the Calculation Revolution! With the TrackBack
calculator, you can see what you're doing and make corrections
to your calculations without starting over.
See what you entered
here
Just use the arrow keys to TrackBack through your numbers and
to select the number or function you want to correct. Then
replace your selection with the new value, and continue.
It's that's simple!
The TrackBack lets you check up to 79 entries, so you can be sure
of your numbers!
NOTE: For longer calculations, it is recommended to obtain
sub-totals by pressing the "=" key after a set of 5-10 values, then
continue on and verify the next set of numbers.
Profit Analyzer
ON Turn ON the calculator
ON
AC All Clear
AC
(Only on larger desktop calculators)
Performing Calculations
Review and Correct Calculations
Owner's Manual
DD-7722
How to review calculations
Press the UP and DOWN
arrow to review your
last 25 calculations.
How to correct a previous calculation
Change 5 x 7 = 35 to 5 x 8 =40.
See the
result here
Use the LEFT ARROW key to move
the cursor over the 7.
Press the 8 key to replace the 7 then
press the EQUAL key.
NOTE:
The UP and DOWN keys
are used for reviewing
previous calculations.
The LEFT and RIGHT keys
are used for moving the
cursor for corrections.
Profit Analyzer
How to calculate profit margin
Example
Your cost is 100.
Enter 100 then press
the COST key.
You want to sell at 150.
Enter 150 then press
the SELL key.
The profit margin will now
automatically show.
In this case the profit margin is
33.33%.
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