1. Elisabeth reads an article on common computer terminology She does not understand the meaning of the operating system. She comes to you for help. How will you explain the term operating system to Elisabeth. __ (2 Marks) the following keys on the keyboard. a. CTRL+B (1 mark) b. CTRL+A (1 mark) 3. State TWO mouse actions (2 Marks) 4. Highlight TWO advantages of previewing a document before printing. 5. Outline THREE functions of Operating System in computer System. 6. Veronica tried to retrieve a document file following all the steps correctly.The file did not appear in file directory. State TWO possible causes for this. (2 Marks) 7. Small scale and large-scale organizers are turning to the use of in-house developed software for the processing activities rather than use of standard software. a. Explain the term in- house developed software. (2 Marks) b. State TWO reasons that may influence these organizations to make such decision (2 Marks) 8. Outline TWO reasons why it is important to shut down the computer using the correct procedure. (2 Marks) 9. Barbara wants to create a newsletter. She needs a program that provides several newsletter templates. Identify the type of program that will meet her needs.(1 mark) 10. Explain TWO characteristics of a computer. 11. State TWO reasons as to why the computer is referred to as an electronic device. 12. Highlight FIVE application areas where spreadsheet software can be used 13. Outline FIVE reasons why micro computers are suitable for personal computing 14. Lydia intends to use tab stop feature to align text in a document created using a word processing program. Outline FOUR examples of tab stops she could apply. (4 Marks) (2 Marks) (3 Marks) (4 Marks) (2 Marks) (5 Marks) (5 Marks)

1. To explain the term "operating system" to Elisabeth, you can say that it is a software that manages the computer's hardware and software resources and provides common services for computer programs. It acts as an intermediary between users and the computer hardware.<br /><br />2. <br />a. CTRL+B: This key combination is typically used to bold the selected text.<br />b. CTRL+A: This key combination is typically used to select all the content in a document or a webpage.<br /><br />3. Two mouse actions are:<br />a. Clicking: This action is performed by pressing down the left mouse button once.<br />b. Dragging: This action is performed by pressing down the left mouse button and then moving the mouse while holding it down.<br /><br />4. Two advantages of previewing a document before printing are:<br />a. It allows you to review the layout and formatting of the document to ensure everything looks as intended before printing.<br />b. It helps you identify any errors or issues that need to be corrected before printing, such as missing text or incorrect margins.<br /><br />5. Three functions of an operating system in a computer system are:<br />a. Managing system resources: The operating system manages the computer's memory, processes, and files.<br />b. Providing a user interface: The operating system provides a way for users to interact with the computer, such as through a graphical user interface (GUI) or a command-line interface (CLI).<br />c. Managing system security: The operating system protects the computer and its data from unauthorized access and viruses.<br /><br />6. Two possible causes for Veronica's document file not appearing in the file directory after following all the steps correctly are:<br />a. The file may have been deleted or moved to a different location.<br />b. There may be a corruption or error in the file system that is preventing the file from being displayed.<br /><br />7. <br />a. In-house developed software refers to software that is created and maintained within an organization, rather than being purchased from a third-party vendor.<br />b. Two reasons that may influence organizations to develop their own software are:<br /> i. Customization: In-house developed software can be tailored to meet the specific needs and requirements of the organization.<br /> ii. Control: By developing their own software, organizations have complete control over the source code and can ensure that it is secure and up-to-date.<br /><br />8. Two reasons why it is important to shut down the computer using the correct procedure are:<br />a. To prevent data loss: Properly shutting down the computer ensures that all changes made to the system are saved and that the computer can restart without any issues.<br />b. To protect the system: Properly shutting down the computer helps to prevent any corruption of system files and ensures that the computer can start up correctly the next time it is turned on.<br /><br />9. The type of program that will meet Barbara's needs for creating a newsletter is a word processing program, such as Microsoft Word or Google Docs, which typically offer various templates for newsletters.<br /><br />10. Two characteristics of a computer are:<br />a. It is an electronic device: Computers use electricity to operate and process information.<br />b. It can perform calculations and process data: Computers are designed to perform various tasks, such as calculations, data processing, and information storage.<br /><br />11. Two reasons why the computer is referred to as an electronic device are:<br />a. It uses electricity to operate: Computers rely on electrical power to function.<br />b. It processes information electronically: Computers use electronic circuits and components to process and manipulate data.<br /><br />12. Five application areas where spreadsheet software can be used are:<br />a. Data analysis: Spreadsheets can be used to analyze and interpret data.<br />b. Budgeting and financial planning: Spreadsheets are commonly used for creating budgets and financial plans.<br />c. Project management: Spreadsheets can be used to track and manage project timelines and tasks.<br />d. Data visualization: Spreadsheets can create charts and graphs to visualize data.<br />e. Inventory management: Spreadsheets can be used to track and manage inventory levels.<br /><br />13. Five reasons why microcomputers are suitable for personal computing are:<br />a. Affordability: Microcomputers are generally more affordable than larger computers.<br />b. Portability: Microcomputers are often smaller and more portable than larger computers.<br />c. Ease of use: Microcomputers typically have user-friendly interfaces and are easier to operate.<br />d. Versatility: Microcomputers can be used for a wide range of tasks, from word processing to web browsing.<br />e. Limited resources: Microcomputers have limited resources, which makes them suitable for personal use rather than large-scale computing.<br /><br />14. Four examples of tab stops Lydia could apply in a document are:<br />a. Left tab: This aligns the text to the left edge of the tab stop.<br />b. Center tab: This aligns the text to the center of the tab stop.<br />c. Right tab: This aligns the text to the right edge of the tab stop.<br />d. Decimal tab: This aligns numbers at the decimal point.