Lesson 2 Performing Computer Operations.pptx

This topic covers the different Computer operations.

1. Lesson 2 Performing Computer Operations

2. Learning Objectives:

3. Pre-test Direction : Put a checked mark if the statement is correct and cross mark if the statement is incorrect . 1. System unit is the brain of the computer. 2. Output device is any peripheral to provide data and control signals to an information processing system. 3. Software is a set of instructions that guides the hardware to operate effectively. 4. Software is split into two main types: the Input and Output devices. 5. To open a MS Word you have to look first to the application in the desktop or in its storage location. 6. Using the Home Tab it allows you to format text. 7. Shortcut key CTRL+V means you can paste copied text. 8. The right lighting can reduce eyestrain, neck strain, and headaches when using a computer. 9. Home row keys are A S D F J K L :. 10. www.google.com is an example of website that provides information to users.

4. Understanding the Computer System As an aspiring computer technician, it is very important to know the different components of a computer system. These are the hardware, software and peopleware. Each component plays an important role, without each other computer systems will not work properly. HARDWARE Computer hardware is the collection of physical elements that constitutes a computer system. Computer hardware refers to the physical parts or components of a computer. Major hardware components of a computer system The following list represents a basic set of hardware found in most PCs. 1. System Unit- The main part of a microcomputer, sometimes called the chassis. It includes the following parts: Motherboard, Microprocessor, Memory Chips, Buses, Ports, Expansion Slots and Cards. A System unit is the brain of a computer. It is responsible for all functions and processes.

5. Categories of Hardware Hardware has two categories: it can be an input or output device. Input device is any peripheral (piece of computer hardware equipment) to provide data and control signals to an information processing system such as a computer or other information appliance. On the other hand output device used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human readable form

6. Input Devices 1 . Keyboard - the primary input device used to communicate with the computer. A computer keyboard closely resembles a conventional typewriter keyboard with the addition of numerous keys that are used specifically for computing functions. 2. Mouse - The mouse is another input device used to point at objects on the computer monitor and select them. 3. Touch Screen - A display screen that is sensitive to the touch of a finger or stylus. 4. Light Pen - A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. 5. Digitizer Tablet - A graphics drawing tablet used for sketching new images or tracing old ones. Also called a "graphics tablet," the user contacts the surface of the device with a wired or wireless pen or puck. 6. Scanning Devices- A device that can read text or illustrations printed on paper and translates the information into a form which the computer can use. 7. Microphone - It allows the user to speak to the computer in order to record a voice message or navigate software. 8. Web Camera - used in transmitting live images over the World Wide Web.

7. Output Devices 1. Monitor - It displays information in visual form, using text and graphics. The portion of the monitor that displays the information is called the screen or video display terminal. There are 3 types of Monitor these are the CRT, LCD and LED Monitors 2. LCD Projectors - utilize two sheets of polarizing material with a liquid crystal solution between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light. 3. Printer - - A device that prints text or illustrations on paper. There are different types of printer, these are Ink-Jet or Bubble-Jet Printer, Laser Printer, LCD and LED Printer, Line Printer and Thermal Printer. 4. Speakers - It is used to play sound. They may be built into the system unit or connected with cables.

8. SOFTWARE   The set of instructions (also called a program) that guides the hardware to operate effectively. Software is split into two main types: System Software and Application software. Comparison of System Software and Application Software   System Software Application Software   It is responsible for controlling, integrating, and managing the individual hardware components of a computer system It is used to accomplish specific tasks other than just running the computer system.     Example 1. Microsoft Windows 2. Linux 3. Unix 4. Mac OSX 5. DOS 1. Microsoft Office 2. Google Chrome 3. Adobephotoshop 4. MySQL 5. Sony Vegas Interaction Generally, users do not interact with system software as it works in the background. Users always interact with application software while doing different activities. Dependency System software can run independently of the application software. Application software cannot run without the presence of the system software.

9. PEOPLEWARE It refers to people involved in the data processing operations such as the system administrator, office workers, students and others.

10. Lesson 3: Word Application Being able to use a word-processor is necessary in today’s society. Few people use typewriters when a computer provides a better alternative. There are clear advantages of using a word-processor compared to the usual method of writing on paper or typing with a typewriter. Users should appreciate the use of a word-processor and be encouraged to use it for most writing tasks.

11. A. OPENING A WORD APPLICATION There are many ways to open a word application ✔ Use the start button, then select Microsoft office, and finally select Microsoft word ✔ Use a shortcut on the desktop, double click the MS WORD icon. ✔ Use the shortcut keys by pressing the windows logo from the keyboard and letter R at the same time. A dialog box on the left downside will appear, type the word “MS WORD” on the search bar and then click the OK button.

12. B. FORMATTING A WORD APPLICATION USING BARS 1. Title Bar This bar is referred to the file name and the title of the program. In this case, the program is called Microsoft Word.

13. 2. Toolbar It is located at the top of your computer screen. It displays various sections that give you options for formatting, styling, and saving your document.

14. 3. Home Tab The Home Tab is Microsoft Word’s standard view. This is the view most widely used and allows you to format text by Font Style, Font Size, Bold, Italic, Underline, Alignment, Numbered List, Bulleted List, Indentation, Spacing, and Font Color.

15. 4. Insert Tab It contains any additives you want to place in your document, including but not limited to: Tables, Online Picture/Clip Art searches, Headers, and Footers. These icons are convenient and will bring up a dialogue box to give you further options when clicked.

16. 5. Design Tab It contains different styles of page formatting. When you type, your layout will automatically match the format selected. It also allows you to change the color scheme, watermark, and paragraph spacing of the document.

17. 6. Layout Tab It contains icons for page setup and paragraph actions, such as Margin, Orientation, Size and Columns.  

18. 7. References Tab It makes especially simple to add Table of Contents, Footnotes, Bibliographic Information, Indexes and Citations.

19. 8. Mailings Tab It is for post-office related uses. If you wanted to create custom Envelopes or Labels, this is where you would find such actions.

20. 9. Review Tab This is where one can find Spelling & Grammar, the built in Thesaurus and Dictionary, you can Track Changes, Check Word Count, and Show/Add Comments.

21. 10. View Tab It allows you to change the views of your document.