Class 9

Unit - 3 

Q1. What are the three main components of a CPU?
Ans.  Three main components of a CPU are: 
a. Arithmetic and Logical Unit ( ALU) 
b. Control Unit (CU) 
c. Memory Unit (MU) 

2. Define Register.
Ans. A register is a very small data holding place in a computer processor. It holds an instruction, storage address or data. 

3. Name two types of primary memory.
Ans. Two types of primary memory are: RAM (Random Access Memory) and ROM (Read Only Memory). 

4. Which unit is used to measure the speed of a CPU?
Ans. CPU speed is measured in Megahertz(MHZ). 

5. What is DOS?
Ans. Disk Operating System (DOS) is a type of system software that runs from a hard disk drive. It is a command line operating system. 

6.Define Desktop.
Ans.  The desktop is the primary user interface of a computer. It includes the desktop background (or wallpaper) and icons of files and folders you may have saved to the desktop. 

7. What is Social Media?
Ans. Social media is an online platform that facilitates the building of social networks or social relation among people who, share similar interests, activities, backgrounds, or real-life connection. 

8. Define System Software.
Ans. System software is a type of computer program that is designed to run a computer's hardware and application programs. 

9.Name two types of impact printers.
Ans. Daisy Wheel Printers, Dot-Matrix Printers. 

10.What is Recycle Bin?
 Recycle Bin is used by Windows computers to store deleted items. It temporarily stores files and folders before they are permanently deleted.

Part - B

Unit I: Introduction to IT and ITes Industry 

Q1. Define ITes.
Ans. The services enabled by the use of Information Technology can be termed as ITeS. These services improve the efficiency of an organisation and help in reducing cost.
2. What is the structure of an IT-BPM industry?
Ans. The companies within the IT-BPM industry are classified on the basis of the following parameters: 

• The area to which the company is serving.
• The type of services the company is providing.
• The geographical reach of the company.
• Scope of operations and profit earned by the company. 

3. Give an example of the use of IT in following areas.
Ans. 

• Online Banking -Transferring money between accounts using IMPS, RTGS, and NEFT 
• E-learning - Accessing educational videos through YouTube 
• Library management - Recording book issuance and collection information 
• Hospital management system - Managing Computerised appointments with doctors

4. What do you understand by LMS?
Ans. A Learning Management System (LMS) is a software application or Web based technology used to plan, implement, and assess a specific learning process.. 
5. Briefly describe the impact of IT in your everyday life.
Ans. Some of the ways we use IT in our everyday lives are: 
a. Paying bills online 
b. Reading online newspapers 
c. Playing games on smartphones and PCs 
d. Using e-mail, social media, video calling, etc. 
e. Booking hotel, railway, flight or movie tickets 
f. Online shopping

Unit - 2 (DATA ENTRY AND KEYBOARDING SKILLS)

1. What are Home row keys?

Ans.The home row keys for your left hand are A, S, D, and F and your right hand are J, K, L and ; (semicolon). 

2.Write any four common mouse actions.

Ans. Four common mouse actions are: 

• Click or left-click

• Double-click

• Right-click

• Drag and Drop

3.What do you understand by combination keys?

Ans. Combination keys are used in combination with other keys to perform an action. Ctrl, Alt, and Shift are known as combination keys. 

4.What should be the correct posture while typing?Ans.

1) Always remember to keep your back straight. 

2) Keep your elbows bent at the right angle. 

5. How to calculate typing error percentage?

Ans. Error % = (words with errors *100)/Total number of words 

6. Name any two keyboard training apps?

Ans. Rapid Typing, Typing Master

Long Answer Type Questions - 

Q1. How many type of keys are there in keyboard?

Ans. Keyboard is the basic input device that is used to enter data by pressing keys.Any standard keyboard has 104 keys and divided into following categories - 

1. Alphanumeric keys

2. Numeric Pad

3. Punctuation Keys

4. Function Keys

5. Special Keys

6. Navigation Keys

7. Combination Keys

8. Toggle Keys

Q2. What is touch typing? Mention its Benefits.

Ans. Touch typing is typing without looking at the keyboard. In touch typing method, your fingers learn the location of the keyboard through practicing regularly and gains muscle memory. In this way, you can fasten your typing speed. 
Benefits of using touch typing-
1.Speed 
2.Accuracy
3.Time 
4.Focus

Q3. What is the difference between gross speed and net speed?

Ans.Gross speed is a calculation of exactly how fast you type with no error penalties. The Gross typing speed is calculated by taking all words typed and dividing it by the time it took to type the words.

 WPM = (Words without errors + Words with errors) / Time spent in minutes 

Net speed is a calculation of exactly how fast you can type error-free. It is arguably the most useful tool in gauging typing abilities. 

Net WPM = WPM – (words with errors / Time spent in minutes) 

Q4. What do you understand by typing accuracy?

Ans. Accuracy in typing means that you type the words accurately and correctly. Typing accuracy is defined as the percentage of correct entries out of the total entries typed. 

So, if you typed 90 out of 100 characters correctly, you typed with 90% accuracy. 

Accuracy % = 100% - ((words with errors × 100%)/Total number of words)

 Example, A person typed 50 words per 2 mins. with errors in 6 words. 

Accuracy = 100 - ((6 * 100)/50) = 88%

 

1. OpenOffice is a powerful and free office suite, used by millions of people around the world. Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity. OpenOffice includes several applications that make it the most versatile Free and Open Source office suite on the market. Some of its applications are: Writer (word processing), Calc (spreadsheets), Impress (presentations). 2. The OpenOffice Writer window has the following components: • Title Bar: The Title bar appears on the top of the screen. It displays the name of the current document and application. On the Title Bar extreme right, you will find Minimize, Maximize, and Close buttons. • Menu Bar: This bar contains all the menu options present in the Writer application. The drop-down menus allow the user to interact with the Writer application in various ways. To open a menu, click on the menu name or press the Alt key and the menu-specific hotkey (which appears as an underlined letter in the menu). When you select a menu, a submenu appears. Some submenu items show right hand side arrow next to the submenu name, which indicates that there is another submenu. • Standard Toolbar: This bar is present below the Menu bar. It displays the icons of the commonly used commands. By default, Save, Undo, Redo, New, Open, Cut, Copy, Paste, etc., icons appear on the Standard toolbar. • Formatting Toolbar: It is present below the Standard toolbar. It contains the commonly used commands to format and beautify the text. It displays Font Name, Font Size, Font Color, Alignment icons, Bullets and Numbering icons, Indents and Highlighting icons on it. • Rulers: Rulers are present on both top and left side of the document. The horizontal ruler measures the width of the document page. It displays margin settings, tab settings and indentation. The vertical ruler allows you to format the vertical alignment of text. The numbers present on vertical ruler indicate the position of text on that page. • Document Area: It is the large area where you can type, edit, and format the text. • Scrollbars: There are vertical and horizontal scrollbars on the right side and bottom of the Writer window, respectively. You can move the screen display towards up and down with the help of vertical scrollbar, and shift it right or left using the horizontal scrollbar. • Status Bar: It displays the page number, number of words and characters, active working mode, current dictionary in use, a button to save the current document, view buttons, and zoom slider. It is located at the bottom of the document window. • View Buttons: OpenOffice Writer provides different views. Three views are available on the Status bar, such as Single-page view, Multiple-page view, and Book view, and other views are available in the View menu, such as Print Layout, Web Layout, and Full Screen. To change the view, select the menu and click on the required view

option, or click on the required view available on the Status bar. • Zoom Slider: By moving slider handle in or out you can adjust the zoom percentage of the workspace displayed. • Sidebar: It contains six buttons — Sidebar Settings, Properties, Page, Animation, Master Slides, Styles, Gallery, and Navigator. These buttons enable you to make changes in settings of Sidebar, and allow you to format the document. 3. The larger window is called the Application window and the smaller window, which is inside the application window, is called the Document window. The Application window helps the user to communicate with the OpenOffice Writer program. The Document window is usedfor typing, editing, and formatting the text. 4. You can save a document by using either the Save command or the Save As command. To save a file, do one of the following: • Press Ctrl+S. Or Under the File menu, choose Save. Or Click on the Save icon on the Standard toolbar. • If the file is new, the Save As dialog appears. Enter the file name, verify the file type and location, and click on Save. The file will be saved with the extension .odt. • If the file has already been saved, then nothing else needs to be done. The file gets re-saved with the same name and settings. • If you have done some changes in a saved file and want to save it with a new name, then click on the Save As option under the File menu. This will ask you to save the existing file with a new name, and will keep the original file as it is. 5. Once a document is saved on your computer, it can be retrieved any time it is required. When no document is open, then follow any one of the below mentioned steps to open an existing document. • Click on Open File or Remote Files in the main startup window of OpenOffice. OrChoose File > Open /Open Remote File from the Menu bar. Or Press Ctrl+O on the keyboard. If a document is already open, the second document opens in a new window. To open another document: • Click the Open icon on the Standard toolbar. Or Use File >Open /Recent Documents to select the file you want • Click on Open. The Open dialog box appears. • Locate your file and select it. • Click on the Open button. The selected file will open immediately in existing window or new window (if a document is already open). 6. Navigator in Writer is a useful tool which is used for working with large and complex documents. A large document has multiple objects like tables, headings, sections, hyperlinks and comments associated with it. The Navigator facilitates easy access and navigation between these objects. In the Navigator window, all the objects are displayed in the form of a list. To access an object, simply double-click on the object name. 7. The mouse pointer, when brought over the text, generally changes its shape into I-beam. In this situation, it is referred to as a Text Select cursor. One can edit the text by moving the Ibeam over the text and clicking on the desired text to edit it. 8. The Find feature only searches for a particular text or format in the document, whereas, the Find & Replace feature can also replace the found text or format with another text/format. 9. Replace option replaces each occurrence of the found one by one (asks before each replacement) with the desired text, whereas, Replace All option replaces all the occurrences of the found text at once with the desired text. 10. Text formatting is applied in a document to enhance the appearance of text and individual characters. It increases the readability of the document. From font sizes to font styles, text positioning to text attributes, text formatting includes all attributes that can be used todefine the arrangement and visual display of text. To apply formatting, you first select the text and then apply the required text formatting. 11. Superscript: It places the selected text slightly above the line of text. Subscript: It places the selected text slightly below the text baseline. 12. The distance between the text boundaries and the page margins is called Indent. The indenting feature is used to move the complete paragraph or the first line to a specific number of places between the left or right margins. To indent a paragraph, follow these steps: • Select the paragraph to be indented, or place the cursor before the paragraph. • Click on the Increase Indent button on the Formatting toolbar. The selected text will shift ½ inch away from the left margin. • Click on the Decrease Indent button on the Formatting toolbar to move the text ½ inch closer to the left margin. 13. Open the OpenOffice Writer on your computer. Click on the Format menu and choose the Page option. The Page Style dialog box appears. 14. Page break is an important feature of OpenOffice Writer. It allows you to insert a break in the page, and moves the cursor on the new page. 15. To insert a symbol, follow these steps: • Place the cursor at the position where you want to insert a symbol. • Click on the Insert menu and select the Special Character option. • The Special Character dialog box appears. • Choose the desired symbol and click on the Insert button. Selected symbol will appear at the cursor's position.