Page 62 - Ai_V1.0_Class9
P. 62
Some important functions performed by some of the keys are:
• Control keys: These keys such as Control (CTRL), SHIFT, SPACEBAR, ALT, CAPS LOCK and TAB are used in
combination with other keys to perform specific functions related to the operating system or software applications.
• Enter keys: The Enter key, also known as the Return key, is a fundamental key on a computer keyboard. Its
primary purpose is to execute a command or to move the cursor to the next line in a text document.
• Punctuation keys: Punctuation keys include keys for punctuation marks, such as colon (:), semicolon (;), question
mark (?), single quotation marks (‘’), and double quotation marks (“”) are essential for proper grammar, syntax,
and communication in written language.
• Navigation keys: These keys allow you to move the cursor or navigate through text and documents. They are
essential for editing, selecting, and moving within different software applications. Arrow Keys (Up, Down, Left,
Right) allow you to move the cursor or highlight text in the corresponding direction.
The Home key moves the cursor to the beginning of a line of text or to the start of a document. The End key moves
the cursor to the end of a line of text or to the end of a document. The Page Up key scrolls up one page at a time in
a document or on a webpage. The Page Down key scrolls down one page at a time in a document or on a webpage.
• Command keys: Command Keys, such as INSERT (INS), DELETE (DEL), and BACKSPACE execute specific
commands or functions within an application or the operating system. When the INSERT key is turned ON, it
helps you overwrite characters to the right of the cursor. The DELETE key and the BACKSPACE key are used to
remove typed text, characters and other objects on the right and left side of the cursor, respectively.
• Windows key: It is often denoted by the Windows logo ( ), and is found on most Windows-compatible
keyboards. Pressing this key opens the Start menu.
Internet - Introduction
Nowadays, the Internet has become an important means of communication for the people even at remote
locations. It is a worldwide system of interconnecting computers through a global network for the purpose of
sharing information. It can be accessed by anybody all over the world.
It is defined as: "A global system of networks using wired or wireless mediums to interconnect different types
of networks consisting of billions of computers, smartphones and other smart devices for sharing data and
information with add-on features of entertainment, services and ecommerce."
If your computer is connected to the Internet, you say that your computer is online. With the help of the Internet,
you can gather a lot of knowledge which is available on it. The knowledge is stored in a big library/ storehouse,
called the World Wide Web (WWW) or the Web. It is a collection of different websites that you can view if you are
connected to the Internet. You can also use these websites to buy something, watch movies, read books, learn new
skills, educate yourself, find the best colleges to study further, etc. Uses of the Internet There is no limit to what you
can do online, but some of the most common uses are given below:
• Search information: The Internet helps to locate information from the world wide web using search engines.
These are websites that allow the users to search for any information using keywords or phrases. You can get
the latest information about anything that is uploaded on the web, whether it is the result, news about an
earthquake, a cricket match or the election details.
• Shopping: You can buy and sell products, such as books and electronic goods over the Internet. You can also
pay for these products via digital modes of payments, such as wallets, plastic cardsor through e-banking.
• Entertainment: The online mode has become a new generation entertainment medium. You can watch movies/
series online, play games, listen to music, etc. There are online applications that allow you to even play musical
instruments online. You can play games in teams with other people on this virtual platform.
60 Artificial Intelligence Play (Ver 1.0)-IX

