Microsoft Office Tutorials and References
In Depth Information
Controlling Recalculation
You can modify which online services are available for use in a search by
clicking the Research Options link that appears at the very bottom of the
Research task pane. When you click this link, Excel opens a Research Options
dialog box that enables you to add or remove particular reference books and
sites by selecting their check boxes.
Controlling Recalculation
Although extremely important, locating information in a worksheet is only
part of keeping on top of the information in a worksheet. In really large
workbooks that contain many completed worksheets, you may want to switch to
manual recalculation so that you can control when the formulas in the
worksheet are calculated. You need this kind of control when you find that Excel’s
recalculation of formulas each time you enter or change information in cells
has slowed the program’s response to a crawl. By holding off recalculations
until you are ready to save or print the workbook, you find that you can work
with Excel’s worksheets without interminable delays.
To put the workbook into manual recalculation mode, you select the Manual
option on the Calculation Options’ button on the Formulas tab of the
Ribbon (Alt+MXM). After switching to manual recalculation, Excel displays
CALCULATE on the status bar whenever you make a change to the worksheet
that somehow affects the current values of its formulas. Whenever Excel is
in Calculate mode, you need to bring the formulas up-to-date in your
worksheets before saving the workbook (as you would do before you print its
worksheets).
To recalculate the formulas in a workbook when calculation is manual, press
F9 or Ctrl+ (equal sign) or select the Calculate Now button (the one with a =
picture of a calculator in the upper-right corner of the Calculation group) on
the Formulas tab (Alt+MB).
Excel then recalculates the formulas in all the worksheets of your workbook.
If you made changes to only the current worksheet and you don’t want to
wait around for Excel to recalculate every other worksheet in the workbook,
you can restrict the recalculation to the current worksheet. Press Shift+F9 or
click the Calculate Sheet button (the one with picture of a calculator under
the worksheet in the lower-right corner of the Calculation group) on the
Formulas tab (Alt+MJ).
If your worksheet contains data tables that perform different what-if scenarios
(see Chapter 8 for details), you can have Excel automatically recalculate all
parts of the worksheet except for those data tables by clicking Automatic
Except Data Tables on the Calculation Options button’s drop-down menu on
the Formulas tab (Alt+MXE).
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