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Inside The Book







                  The key features of the series have been designed to ensure better learning and assessment.



                     Learning Resources





                                                Digital Versatile Disc (DVD)
                                                A DVD looks similar to a CD. It is used to store a huge
                                                amount of data. The storage capacity of a DVD is more
                                                than a CD but less than a hard disk.
                                                   Pen Drive
                                                             DVD
                    Computer Keyboard              It is a small storage device, also known as the USB Flash drive. It
                                                   is used to transfer data from one computer to another. It can be
                                                Pen Drive
                                                   easily carried in a pocket.
                              Chapter
                              04                Tech
                                                Funda
                      Your Aim                     The computer has special ports for   4.   Playing games for a long time on the computer
                      to learn about:              pen drive called the USB Ports. We   distracts us from doing our daily tasks.
                       Alphabet Keys               insert the pen drive into a USB port   USB
                              Number Keys
                        Special Keys               to store data in it.  Port  5.   Sometimes our computers may get infected by
                               Function Keys                                                             3.
                        Combinational Keys                                a virus. A computer virus is a harmful program
                               Punctuation Keys
                        Symbol Keys                                       that doesn’t let a computer work correctly.
                   You have already learnt that a keyboard is a main part of a computer. It has many
                                               Storage devices act as both input and output devices.
                                                                            If animals had their own types of computers, what would a computer
                   keys such as alphabet keys, number keys, and special keys, that are used for typing.
                   Let us learn about these keys in detail.                 for a cat or a dog look like, and what programs would it have?
                     Escape Key                                                                                ................................
                        Function keys                                                                  Hands On
                             Backspace key  Number keys
                                                                            COMPUTER VS HUMAN
                   Number                          The parts of a computer are divided into three categories—input devices,   A computer can do a lot of things in a better manner than a human.
                                                output devices and storage devices.
                   keys
                   Tab key                         Input devices are used to instruct the computer what to do.     Computer   Human  them into your notebook or scrapbook.  #Creativity & Innovativeness
                   Caps Lock                      Keyboard, mouse, scanner and microphone are some of the input devices.
                   key                            Output devices are used to give the result.
                                                                                                       Collect computerised bills that you receive from any local shop or mall and paste
                                                devices.
                                                  Monitor, printer, speakers, headphones and headset are some of the output
                      Alphabet keys  Spacebar key  Arrow keys     Storage devices are used to store our work.    #Experiential Learning
                         Shift keys               Hard disk, CD, DVD and pen drive are some of the storage devices.
                               Enter keys                                                             are used to keep the student’s records.
                     ALPHABET KEYS
                                               30  iPro (Ver. 4.1)-II
                                                                                                       With the help of your teacher, visit the school’s office and see how computers
                  Alphabet keys are used to type words and sentences. There are 26 alphabet keys
                  on the keyboard from A to Z.                                                        Teacher's Corner
                                                                             I never make any mistakes.
                                                                                    I can make mistakes.  the help of videos.
                                             Clickipedia: This                                       3.  Take the children to show them an ATM.
                                                                                                      1.    Show how computers are used at different places like offices, shops, banks, hospitals, etc. with
                                                                                                     2.  Explain that all railway and airline ticketing is done by computers.
                              Computer Keyboard  35
                                             section provides
                                                                              I store a large amount of   I may forget the information
                                                                          information and never forget it.
                                                                                    stored in my mind.
                                           interesting computer
                                                                                         11
                                                                                   Computer—An Electronic Device
                   Your Aim: This                 facts.                 Think Tank: This           26  iPro (Ver. 4.1)-II
                  section describes                                     encourage students          Hands On: This
                                                                       to explore innovative      section contains an
                 the objective of the
                      chapter.                                            ideas and think          activity for Home
                                                                       beyond conventional           assignment.
                                                                              topics.
                                                    EXPLORE MORE
                                                      Tux Paint                                    Tech
                                                Tux Paint is a free software for young children. It is commonly used for children to   The result we get on the monitor screen is called soft copy
                                                draw and create paintings.                         Funda  and the result we get on paper is called hard copy.
                                                 STEPS TO START TUX PAINT
                                                2  Scroll to find
                                                the letter T in the   The Tux Screen,
                    quickly.                    left pane. Click   when it opens                   Speakers
                                                on Tux Paint.  looks like this.  Digital Literacy  Speakers are output devices that are used for listening to music,
                    Drag and drop is a very useful action. It can be used to move objects on the screen
                          release                                                                  voice and other sounds played from a computer.  Speakers
                     press  move                 1  Click on the          Gl    ssary
                                                 Start button.
                                                                                                        without causing  any  disturbance to others. They are worn
                                                     3  Click on Tux                                    Headphones
                                                     Paint (Full Screen).                               Headphones  are  small speakers used to hear  the  sound
                                                The main screen is divided into the following sections:  Alphabet Keys
                                                                               keys on the keyboard.    over the ears.
                                                                               These keys are used to type words and sentences. There are 26 alphabet
                                                                                                    A headset is a combination of headphones and a microphone.
                                                        Up and Down Arrows  Brushes Tool            Headphone
                        Drag and drop            Toolbox  Clicking on these arrows   This tool is used for freehand drawing.  Headset
                                                 It contains   allow you to see more   Selector     Headset
                                                             It is
                    Reb  t                       a variety   symbols.  select the   Compact Disc
                                                             used to
                                                 of tools.
                                                                                                       STORAGE DEVICES
                                                             desired           A CD is a round and shiny disc. It is used to store a smaller amount of data.
                      A mouse is a pointing device.          options.                               Other than input, output, and processing devices, a computer also uses storage
                                                     Drawing Area/Canvas
                                                     This space is used for                         devices. These are used to store our work. Some of the storage devices are:
                                                      drawing                  Input
                    mouse pointer or pointer.                                  It is the instruction given to the computer in the form of numbers, letters
                                                                               or symbols.
                       While moving the cursor, an arrow is displayed on the screen called as the
                                                                                                     The hard disk is rectangular in shape. It is fixed inside the CPU
                      Mouse is always kept on a mouse pad.
                                                 Colors
                                                 Palette
                       Optical mouse has LED sensor at its bottom that helps the pointer on the
                    screen to move.              It contains                   Monitor  It is an output device that looks like a television screen.  Hard Disk
                                                 the colours.  Help Area                             box. It can store a huge amount of information. Nowadays,   Hard Disk
                                                     It gives you tips and
                       Single-click or click is used for selecting an item on the computer screen.
                       Double-click opens the selected item.  details of the selected tool.     Mouse  external hard disk is also available.
                                                                              of a button.
                                                                              It is an input device that sends instructions to the computer with the click
                                                                                                         Compact Disc (CD)
                       Right-click displays a list of options of the selected item.
                       A computer mouse has a wheel in between the right button and the left
                                                  iPro (Ver. 4.1)-I                                      A CD is a round and shiny disc. It is used to store a smaller
                                                 64                         Output  It is the result that we get after processing.  amount of data. You can play a CD  by inserting it  into the
                    button. This is known as the scroll wheel.
                       Drag and Drop can be used to move objects on the screen quickly.
                                                                            Pointer  The small arrow on the monitor is called pointer.  CD/DVD drive.  Input and Output Devices  29
                   One
                   One Touch  Learn                                                                    CD
                               Section A (Objective)                         Protocol
                   A.  Tick (3) the correct option.                           A protocol is set of standard rules used for communication.

                   1.  Which of the following is not a function of a mouse?
                    a. Typing                 Explore More: This            Right-click  Pressing and releasing the right button once is called right-click.
                           b. Clicking     c. Dragging
                      2.  What is pressing the left mouse button once called?     Scanner  It is an input device that is used to convert document or images from the   Tech Funda: This
                    a. Clicking                                               paper to the computer.
                           b. Double-clicking   section provides
                                c. Right-clicking                         88 88  iPro (Ver. 4.1)-II
                                                                           iPro (Ver. 4.0)-II
                   50  iPro (Ver. 4.1)-II                                                              section provides
                 Reboot: This section          supplement topics          Glossary: This              practical information
                 provides a summary           for extra knowledge.       section contains                 or tips to the
                  of the chapter for
                                                                          definitions of                    students.
                 quick recapitulation.
                                                                       important IT terms.
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