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Tech
Funda
Use Alt + Tab keys to move
between the open windows.
So, one or more windows can be opened at a single point of time like:
• A web browser like Google Chrome with different web pages for research
• PowerPoint for presentation
• File Explorer
• Word for writing notes
We can also listen to some music while
doing all this work. All these applications
would be opened in separate windows.
If we want, we can display two or more
application windows side by side for easier
work.
In fact, Windows provides us with many options for displaying the application windows while
we are working with multiple applications. We can right-click on the empty area of the Taskbar
to display those options. We can select Show windows side by side option to display all the
windows on the screen simultaneously.
i + DIFFERENT FILE FORMATS
You must have observed that whatever we do on a computer is saved as a file. But every file stores
a different type of data, like a Word file stores text, a video file contains multimedia, an audio file
contains audio and a picture file stores pictures. So, how does a computer differentiate between
different types of files? The file type is also called the file format. All the files that contain different
types of data are saved in different file formats. The file format can be determined by the file
extension. A file extension is a group of three or more characters used to identify the type
of a file. It helps an operating system recognise the different types of files. The file formats of
different types of files depend upon the software used for creating those files. While saving a file,
software adds a file name to specify its format. Some of the most commonly used file extension
or file formats are:
• JPEG: It stands for Joint Photographic Experts Group. It is used to store images. The file
extension of an image file can be .jpeg, .jpg, or .jpe.
• MP4: It is used to store multimedia files. It stores video, movies and still images. A file with
an MP4 extension is an MPEG-4 video file.
• MP3: It is an audio file format that is used to store music files. MPEG stands for Moving
Pictures Expert Group. The file extension of an audio file is .mp3.
• DOCX: It is used to save Word documents. Store images, text, pictures, and tables. The file
extension of the Word file is .docx.
• XLSX: It is used to store Excel spreadsheets. An XLSX file format stores tables in the form of
rows and columns, images, charts, pictures, formulas, etc. The extension of the Excel file is .xlsx.
• PPTX: It is used to store PowerPoint presentations. A PowerPoint presentation saves the data
in the form of slides. The extension of a presentation file is .pptx.
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File Management—Organisation of Data

