CBSE Class 10 Information Technology (code 402) for 2022-23
Introduction
In this article, you will be able to know and learn about some important terminologies, MCQ, and Q&A that are frequently asked while learning and teaching class 10 computer science.
Computer
accessibility
Computer accessibility refers to the user-friendliness of a computer system for all, regardless of disability.
Different
types of impairments
Different types of impairments are:
· Cognitive
impairments and learning disabilities
· Visual
impairments
· Hearing
impairments
· Motor or
dexterity impairments
Sticky
keys
· Sticky key is an
accessibility feature to help computer users with physical disabilities.
· Sticky keys are
used as a means to reduce repetitive strain.
· Sticky keys allow
the user to press and release a modifier key such as shift, ctrl, alt, or the
windows key and have it remain active until any other key is pressed.
Filter
keys
Filter key is an accessibility function
that tells the keyboard to ignore brief or repeated keystrokes, making typing
easier for people with hand tremors.
Toggle
keys
· Toggle key is an
accessibility function that is designed for people who have vision impairment
or cognitive disabilities.
· When the Toggle keys
are turned on, the computer emits sound cues when the locking keys (CapsLock,
NumLock, or Scroll Lock ) are pressed.
Sound
Sentry
· Sound Sentry is
designed to help users with auditory impairments.
· Sound Sentry generates
visual warnings such as a blinking title bar or a flashing border, whenever the
computer generates a sound.
High contrast
High contrast is an accessibility feature to assist people with vision
impairment.
Cursor option
The cursor option is an accessibility feature
that assists people with vision impairment by changing the blink rate and width
of the cursor.
Serial
keys
· Serial key is an
accessibility feature that assists people with difficulty using a keyboard, mouse, or both.
· Special devices such
as Sip, Puff, and Breath switches are used to input the computer
through serial ports.
Word
Press
· WordPress refers
to a free web service that you can use to create a beautiful website or blog.
· Word Press
supports “themes” for customizing the design of a blog.
Internet
security
· Internet security
is a branch of computer security specifically related to the Internet, often
involving browser and network security.
· Internet security
establishes rules and measures against attacks over the Internet.
Headers
· Headers are text
or images included at the top of the page.
· Headers usually
contain important information such as the company or department name, logo, page
number, and author name separated from the work or document area.
Steps
to insert header
Click on the insert tab on the ribbon à click on the header
option in the header and footer group.
Footers
Footers are text or images included at
the bottom of the page and may repeat on all pages of the document.
Styles
Styles or styles are pre-defined or
customized options used for creating good-looking professional documents with the least effort.
Templates
· Templates or
document templates refer to a sample fill-in-the-blank document that can help
in saving time.
· A template is a
model that you use to create other documents.
· Templates can
contain text, graphics, a set of styles, and a user-specific set of information
such as measurement units, language, the default printer, and toolbar and menu
customization.
Page
and section break
· Page and section
breaks can be used to separate a document into sections.
· A page break can
be inserted anywhere in a document to force the end of a page and the beginning
of a new one.
· Section breaks
add flexibility to formatting your document.
Speaker
notes
· Speaker notes are
guided text used by the presenter during a presentation.
· Speaker notes can
be short or long texts that can be used as a reference by the presenter while
making a presentation.
Cropping
· Cropping means
removing unwanted areas from an image starting from its boundary.
· In cropping, only
a part of the original image remains.
Scaling
· Scaling means changing
the size of a full image.
· In scaling, the image
remains full but its height and width are different with respect to the
original image.
Wrap
setting
The wrap setting determines the relation
between the text and the graphic.
Freeze
in spreadsheet
Freezing a particular row or column in a spreadsheet means that a specific row or column doesn’t change when you
scroll.
Slide
transition
A Slide transition is a visual motion
when one slide changes to the next during a presentation.
Trojan
Horse
A Trojan Horse is a malicious program
that performs functions like deleting or damaging files.
Q&A
1. Write any two functions of an entrepreneur.
Two functions of an entrepreneur are:
· Innovation and
creativity
· Risk taking and
achievement, organization and management
2. What is independent working?
Taking the initiative rather than waiting
to be told what to do, without the need for external prodding and working until
the job is completed.
3. What
do you mean by a computer virus? Give two examples.
· Computer viruses
are malicious codes/programs that cause damage to data and files on a system.
· Computer viruses can
attack any part of a computer’s software such as boot block, operating system,
system areas, files, and application-program-macros.
· Two examples of computer
viruses are WORMS and Trojan Horse.
What
is a WORM?
· WORM stands for
Write Once Read Many Times.
· A WORM is a self-replicating program that eats up the entire disk space or memory.
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