ANSWER KEY. Chapter 1. Introduction to Computers

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2 ANSWER KEY Chapter 1. Introduction to Computers Exercises A. 1. c. 2. a. 3. b. 4. a. B. 1. False 2. True 3. True 4. True 5. False 6. True C. 1. Processing 2. Notebooks 3. Output 4. Data 5. PARAM D. 1. Mouse 2. Joystick 3. Monitor 4. Supercomputer E. 1. The difference between a mini and a microcomputer are: Microcomputer Mini Computer Microcomputer is a small computer that is designed to be used by only one Minicomputers have more capability than microcomputers. person either at home or at office. These types of computers are also known as Personal computer. Laptop is an example of Microcomputer. Examples of popular minicomputers are IBM midrange computers and DEC. 2. Computer is an advanced electronic device that takes raw data as input from the user and processes it under the control of set of instructions (called program), gives the result (output), and saves it for the future use. 2 TH Click On 3

3 3. Microcomputer, Minicomputer, Main frame computer and Supercomputer. 4. The computer works in 3 steps-input, processing, and output or IPO cycle or Input Process Output cycle. We feed data and instructions into the computer. These are the input. The computer processes the data and displays the processed data in the form of information. All the instructions are carried out in the processor, the Central Processing Unit or CPU, of the computer. The result of the work done by the processor is called the output. Activity Session To be done by the students on their own. Chapter 2. Hardware and Software Exercises A. 1. c. 2. a. 3. b. 4. b. 5. a. B. 1. False 2. True 3. False 4. True 5. True C. Software Hardware Windows Keyboard LOGO CPU Microsoft Word Microphone D. 1. A Word Processor helps to create documents quickly and efficiently. Some commonly used word processors are Microsoft Word, Google Docs and Open Office.org Writer. 2. Two differences between hardware and software are: Hardware 1. The physical components of a computer are called Hardware. 2. Hardware can be touched. Example: Keyboard and mouse. Software 1. Software refers to the set of instructions or programs that tell the computer how to perform a particular job. 2. Software cannot be touched. Example MS Paint and LOGO. TH Click On 3 Price : `

4 3. Windows XP and Windows The physical components of a computer are called Hardware. It refers to the parts of a computer which we can touch. Some commonly used hardware parts are the Keyboard, Mouse, Monitor, etc. 5. Software refers to the set of instructions or programs that tell the computer how to perform a particular job. A computer without its software is nothing but a box. Two commonly used computer programs are: MS Paint which is used to draw and colour pictures and LOGO which is used to draw simple figures. Activity Session H S O F T W A R E Y R S D T W E A P P L I C A T I O N M R E 4 TH Click On 3

5 Revision Sheet I I. Input Process Output Keyboard Mouse CPU Monitor Printer Speakers II. 1. CPU 2. Speaker 3. Printer 4. Supercomputer 5. Laptop III. 1. False 2. True 3. True 4. True 5. True IV. 1. Software 2. Hardware 3. System 4. Application 5. Word Chapter 3a. Operating System Windows XP Exercises A. 1. c. 2. b. 3. a. 4. a. B. 1. Background 2. Windows 3. Taskbar 4. Icon 5. Desktop C. 1. An operating system or OS is a special software that manages the general operations of a computer system. 2. Icons are small labelled pictures that appear on the desktop. The icons represent files, folders and programs. 3. The long bar that we see at the bottom of the desktop is known as the taskbar. TH Click On 3 5

6 4. The Start button is present at the bottom left of the screen on the taskbar. It is used to start any program. Clicking on the Start button will display a menu. 5. The steps to change the wallpaper are: Click anywhere on the desktop that is not an icon, but click once with your right-hand mouse button. A menu appears, select the Properties option. A dialog box appears. This is the Display Properties dialog box. There are tab strips for Themes, Desktop, Screensaver, Appearance and Settings, click on the Background tab strip and the dialog box will change. There is a list of wallpapers to use. Click on one and we get a preview of what it will look like. Scroll down to see more wallpaper. If satisfied, click the OK button to set wallpaper. Activity Session T T A D S E T S K B A K R T T R I C O N T L E B A R M F O L D E R P N U B A R Chapter 3b. Operating System Windows 7 Exercises A. 1. a. 2. b. 3. c. B. 1. True 2. False 3. True 4. True 5. False 6. False 7. True 6 TH Click On 3

7 C. 1. Task Bar 2. Icon 3. Start Button 4. Background D. 1. An operating system or OS is special software that controls and manages the general operations of a computer system. 2. Mac OS and Linux, 3. Whenever we do any work on a computer like typing a letter, drawing a picture, etc., we do it in the file. A file is represented by an icon. We can keep different things such as letters, songs, pictures and programs in a folder. 4. Start button, Show Desktop button, icons on the right side to change the time, date and month displayed on the computer 5. Like the top of a desk having things that we use while working, a computer also has a desktop. It is the screen that appears when we switch on a computer. It has components like Wallpaper, Icons, and Taskbar. Activity Session M T A S K B A R M Z Q I E R C O O L E R T S C L D E S K T O P S I O E C R I P S S S Z J N V K W I N D O W A F S T A R T B U T T O N R H T P M O C D X Z Y TH Click On 3 7

8 Chapter 4a. Fun with MS Paint Using Windows XP Exercises A. 1. a. 2. c. 3. a. 4. a. 5. a. B. 1. True 2. False 3. False 4. False 5. False C. 1. Brush Tool 2. Text Tool 3. Polygon Tool 4. Rectangle Tool 5. Ellipse Tool D. 1. Pencil Tool and Brush Tool 2. Rectangular Select Tool and Free-Form Select Tool 3. Flip command allows to flip a graphic or a portion of the image in either horizontally or vertically direction. The Rotate command helps to rotate a graphic or a portion of the image in 90, 180 or Stretch command allows stretching a graphic or a portion of graphic horizontally or vertically by some percentage. While the Skew command helps to change the proportions of the image horizontally or vertically by so degrees. Activity Session 1. Rectangle tool 2. Eraser tool 3. Pencil tool 4. Ellipse tool 5. Line tool 6. Fill With Color tool 7. Text tool 8. Brush tool 8 TH Click On 3

9 Chapter 4b. Fun with MS Paint Using Windows 7 Exercises A. 1. b. 2. a. 3. a. 4. b. B. 1. True 2. True 3. False 4. True 5. True C. 1. Eraser Tool 2. Shapes 3. Color Picker Tool 4. Fill With Color Tool D. 1. Text tool helps to type text in the picture. 2. Brush tool is used for drawing thick lines. 3. Cut command is used to remove a part of the image and Copy command is used to make a duplicate copy of an object. 4. The steps to copy and paste an object are: Select the drawing using Select tool. Select the Copy command on the Home tab. Click on Paste command in the Clipboard group on the Home tab. A duplicate copy of the object appears on the top left corner of the drawing area. Activity Session E L L L I I P E N C I L B S E R A S E R E U S E L E C T H TH Click On 3 9

10 Revision Sheet II I. a. Booting b. Wallpaper c. Title bar d. Taskbar e. Scroll bar II. Paint button Tab Title Bar Ribbon Drawing area III. a. Pencil tool helps you to draw straight lines in any direction. b. Line tool helps you to draw circles and ellipse. c. Ellipse tool helps you to draw freehand d. Rectangle tool helps you to draw freehand using thick and thin lines. e. Brush tool helps you to draw squares and rectangles IV. a. False b. False c. True d. True e. False 10 TH Click On 3

11 Exercises Chapter 5. More about the Keyboard A. 1. b. 2. b. 3. c. 4. a. 5. a. B. 1. Backspace marked with arrows 2. Cursor keys erases character from the left side of cursor 3. Enter is the longest key 4. Spacebar used with other keys 5. Shift to start a new line C. 1. False 2. True 3. False 4. False 5. True D. 1. CAPS LOCK 2. CURSOR 3. NUMBER 4. ALPHABET 5. BACKSPACE E. 1. The spacebar key is used to give blank spaces between letters or numbers. 2. When we press the Caps Lock key, the Caps Lock light will turn on and all the letters we type will appear in the upper case. Press the Caps Lock key again, to turn off the light. So to check the caps kick key light. 3. These are 26 alphabet keys from A to Z. Each alphabet key types a separate alphabet and are arranged in random manner. 4. The Enter key is used to type starting from a new line. 5. Two TH Click On 3 11

12 Activity Session K M Y F X N A P B R R I S D M A S T N J G E P E L L H N U C Z X A L O O I T M Q M Q C E Q Q F W B E K W E T C F T Y E N V E B E U T X N R T L R A R R O W A P E P T R K Y Z P P E R G Y A C U R S O R N Chapter 6. Introduction to MS Word 2007 Exercises A. 1. b. 2. b. 3. a. 4. a. B. 1. False 2. True 3. True 4. True 5. True C. 1. MS Word and Openoffice.org writer 2..docx 3. Some components of MS Word window are: a. Microsoft Office button b. Quick Access toolbar 12 TH Click On 3

13 c. Title bar d. Ribbon e. Ruler 4. The Ribbon has options to issue different commands grouped under different tabs. On each tab, items are divided into groups with the group name appearing below the group. Groups contain a series of related commands. As we click on tab buttons it shows relevant options. The Ribbon makes it easier to see and find commands to work with our document. 5. To save a document in MS Word, follow these steps: Click the Save button on the Quick Access toolbar. OR Click on the Microsoft Office button and click on the Save option. The Save As dialog box will appear. In the File name box, type a suitable name for your document. Now, click the Save button. The document is saved at the selected location. Activity Session V P M N A S R N O W Z N S A V E T V R T N E W S R C L O S E C R O P E N E S A X R D R F B L A N K I T V D O C U M E N T TH Click On 3 13

14 2. Microsoft Office Button Quick Acess Toolbar Scroll bar Workspace Revision Sheet III I. II. 1. True 2. True 3. True 4. False 5. False III. 1. MS Word 2. New 3. Open 4. Title bar IV. To be done by students on their own. 14 TH Click On 3

15 Chapter 7. Tux Paint A. 1. c. 2. b. 3. c. 4. b. B. 1. False 2. False 3. False 4. True 5. True C. 1. Tux Paint is a wonderful drawing program for children. Unlike other drawing Painting programs, Tux Paint has a lot of creative tools, funny animations and magical effects which make it one of the best drawing softwares. 2. The three main features of Tux Paint are: a. Tux Paint is freely available and can work on multiple platforms. b. It has sound effects when tools are selected. c. Many drawing tools available and it can be translated into many languages. 3. Yes 4. Major components found in the Tux Paint are: Toolbox Canvas Color Palette Selector Information Area Activity Session Tool Box Selector Canvas Information Area Color Palette TH Click On 3 15

16 Chapter 8. Getting Started with MSW LOGO Exercises A. 1. a. 2. b. 3. a. 4. a. 5. a. B. 1. True 2. True 3. False 4. False 5. True C. Control Buttons Functions 1. Reset Button This button immediately stops Logo from executing any command. 2. Halt button This button helps to correct the errors of the Logo program. 3. Trace Button Clicking this button ensures that the program runs step-by-step. 4. Execute Button It clears the Logo output screen. 5. Step Button It executes the commands typed in Input box. D. 1. Seymour Paper 2. Turtle 3. Home 4. Tail 5. Head E. 1. Some popular programming languages are C, C++, JAVA, FORTRAN, COBOL, QBASIC and LOGO. 2. The full form of LOGO is Language Of Graphic Oriented 3. The LOGO window has two main parts. They are: 1. Main Screen or Graphic Screen 2. Commander Window 4. The Commander window is located below the Main Screen window. It helps to give commands to the turtle. 5. To exit the LOGO, click on File menu and Select Exit option. 16 TH Click On 3

17 Activity Session Scroll Bar Menu Bar Title Bar Control buttons Turtle Input Box Recall list box Chapter 9. LOGO Commands Exercises A. 1. a. 2. a. 3. a. 4. b. B. 1. (b) 2. (c) 3. (e) 4. (a) 5. (d) C. 1. False 2. True 3. True 4. True 5. True D. 1. FD BK FD 100 BK LT 75 D. 1. This command helps to clear the text in the commander part of the window. TH Click On 3 17

18 2. Logo Primitives 3. The RIGHT primitive turns the head of the turtle towards the right side, that is in the clockwise direction. The short form for RIGHT is RT. The LEFT primitive turns the head of the turtle towards the left side, that is in the anticlockwise direction. The short form for LEFT is LT. 4. Show turtle and hide turtle. Activity Session MSWLOGO, TURTLE, PRIMITIVES, BACKWARD, HIDE TURTLE, HOME, RIGHT N R G G F Q V Y X F H H A K Z K X W Z M T E P P U N C U U G K T G R T T P B Z D T X M S T A I L V W P R I M I T I V E S B H U O C E J P Z O M S W L O G O M N C X Y M Y G I L C V K N H H U K P V F K S J R U V P H C L A Q P M M S R Q R Y Q P P A I R Q B AC K W A R D E V S U C M I C C H I D E T U R T L E G C F O R W A R D N N C R A M A J P C J D O R N R I G H T S H O M E O D W B E U M H V V S A S M T P M S 18 TH Click On 3

19 Revision Sheet IV I. To be done by students on their own. II. 1. True 2. False 3. False 4. True 5. True III. To be done by the students on their own. IV. Tool Box Selector Canvas Information Area Color Palette Test Paper I I. 1. iii. 2. i. 3. ii. 4. ii. 5. ii. II 1. The computer parts that help us to enter data and instructions into the computer are called input devices. Keyboard, Mouse, Joystick, TH Click On 3 19

20 Microphone, Scanner and Light pen are some input devices. 2. When processing is completed, computer gives the results through the output devices. Monitor, Printer, Speakers and Headphones are some of the output devices. 3. Name for input devices are : Keyboard, Mouse, Joystick and Microphone 4. Name three output devices are : Monitor, Printer, Speakers 5. Whenever we do any work on a computer like typing a letter, drawing a picture, etc., you do it in the file. We can keep different things such as letters, songs, pictures and programs in a folder. 6. Microsoft Windows, popularly known as MS Windows or simply Windows, is one of the most popular operating systems. It is a Graphical User Interface (GUI) which allows users to work with icons, menu, Windows, etc. As we know, when the computer is started, the first software that gets loaded in it is the Operating System. This is the main software of the computer and the desktop screen appears. 7. System software is the main part of the program which controls the working of a computer system. It is a program which acts as an interface between the user and the hardware. It allows a computer to identify devices attached to it, memory available, etc. Application software is a set of one or more programs, designed to solve a specific problem, or do a specific task. 8. Cut command is used to remove a part of the image and Copy command is used to make a duplicate copy of an object. 9. The Select tool is used to select any part of the picture that we 20 TH Click On 3

21 want to change. The Free-form selection tool is used to select any irregularly shaped part of the picture. We can even drag the selected portion and place it on another location. 10. Pencil tool helps to draw free hand drawings. Brush toot is like a brush used to draw on paper. Test Paper II I. 1. iii. 2. i. 3. ii. 4. iii. 5. ii. II. 1. Turtle is cursor of LOGO. The top pointed end of the turtle is called its head. The wide base at the bottom is called its tail. The turtle moves on the screen according to the commands typed in the Input box of the commander window. Wherever the turtle moves, it leaves a tail (draws a line) behind. It is important to know that when we open the MSW LOGO, we see that the turtle is in the centre of graphic screen. This is called the Home Position of the turtle. 2. When we open the MSW Logo, we see that the turtle is in the centre of graphic screen. This is called the Home Position of the turtle. Home command gets the turtle back to its HOME, the centre of the screen, without rubbing off any part of the drawing. 3. Tux Paint provides an easy method to save work using the Save tool. There is no need to mention the file name. Tux Paint saves you file as a thumbnail rather than giving it a file name. The confirms that the file is saved.a. TH Click On 3 21

22 4. The two features of Tux Paint are: Tux Paint is freely available and can work on multiple platforms. It has sound effects when tools are selected. 5. Microsoft Word is a popular word processing software. It is also called MS Word in short. It is a part of MS Office package which is developed by Microsoft Corporation. 6. Some components of MS Word Windows are: Microsoft Office button, Quick Access Toolbar, Title bar, Ribbon, Status bar, Workspace, etc. 7. Tux Paint is a wonderful drawing program for children. Unlike other drawing Painting programs, Tux Paint has a lot of creative tools, funny animations and magical effects which make it one of the best drawing softwares. 8. The Enter key is used to type starting from a new line. As we go on typing, we generally see that the cursor moves till the end of the line and then automatically shifts to the next line. But to move to the next line before reaching the end of the current line, we have to press the Enter key. 9. The Backspace key is used as an eraser. When pressed, the Backspace key erases the text typed to the left of the cursor. Delete key to remove our mistakes. This key also acts like an eraser. It removes mistakes from the right. 10. CLEARSCREEN command is an eraser. It erases all the work we have done. It is very useful when we want to start a new drawing. It rubs off whatever is drawn on the screen and the turtle reaches HOME, the centre of the screen. However, the primitives do not 22 TH Click On 3

23 get erased. The short form for CLEARSCREEN is CS. CLEAR TEXT command helps to clear the text in the commander part of the window. It is different from Clear Screen (CS) command as CS clears the Graphic Screen and CT clears the Text or command area. We can use both CLEARSCREEN and CLEAR TEXT commands by typing CSCT. TH Click On 3 23

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