Wiley Microsoft Office Excel 2007 Formulas & Functions For Dummies 978-0-470-04655-5 Manuale Utente

Excel 2007 files have the .xlsx extension. Older version Excel files have the
.xls extension.

When Excel starts up, it displays a blank workbook ready for use. If at any
time you need another new workbook, click the Microsoft Office button and
click on New. You will be presented with a plateful of templates, including a
blank workbook. That’s the baby you want, so give it a click to select it and
then click the Create button. A new workbook will open. When you have
more than one workbook open, you pick the one you want to work on by
selecting it in the Windows Taskbar.

A worksheet is where your data actually goes. A workbook contains at least
one worksheet. If you didn’t have at least one, where would you put the data?
Figure 1-2 shows an open workbook that has three sheets — Sheet1, Sheet2,
and Sheet3. You can see these on the worksheet tabs near the bottom left of
the screen.

At any given moment, one worksheet is always on top. In Figure 1-2, Sheet1 
is on top. Another way of saying this is that Sheet1 is the active worksheet.
There is always one and only one active worksheet. To make another work-
sheet active, just click its tab.

Looking at a

workbook

and

worksheets.

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