images is our lesson. Read the 4th-7th images for better understanding.

WEEK 2 TLE 8 -Computer System Servicing - LEARNING TASKS Basahing mabuti ang mga aralin sa Leap Week 2. Sagutan sa hiwalay na papel. Ikaw ang magwawasto at maglalagay ng score. Sagutan ang mga sumusunod na Learning Tasks: A. Direction: Tell whether the following statement is TRUE or FALSE. Write your answers on a separate sheet of paper. 1. The taskbar of a computer sits at the bottom of the screen. 2. Icons are small pictures that represent files, folders, programs, and other items. 3. When you delete a file or folder in your computer, it gets deleted right away. 4. Double-clicking a desktop icon starts or opens the item it represents. 5. There is only one approach in opening a document.6. Proper keyboarding technique will develop optimal keyboarding speed and accuracy to the students. 7. When you are inputting data on the computer you must keep eyes on printed copy. 3. It is ne to expose the keyboard to dust, food, liquid, or other particles because it will not affect to the hardware. 9. Before cleaning the keyboard, you must unplug the USB or P822 port. 10. If you spill liquid on the keyboard, quickly shut down the computer, disconnect and turn the keyboard upside down to allow the liquid to drain. 11. Web browser is used to access information in the internet. 12. Internet explorer is the default browser for windows operating system. 13. Safari is a web browser used in Apple devices. 14. A search engine enables users to locate information on the World Wide Web. 15. URL stands for Universal Resource Locator. TLE a -Computer System Servicing WRI1TEN WORK 2 A. Directions: Read and answer the following statement. Write the letter of the best answer on a sheet of paper. 1. A successful task can be achieved through planning and preparation. A. careful and proper B. courageous C. constant D. seldom 2. Good preparation will boost your . A. Confidence B. Skill C. Intelligence D. weakness 3. One of the factors to consider when planning and preparing for the task in order to avoid accident is A. Materials B. safety C. place D. waste disposal 4. When the task calls for the removal of parts, use . A. Cleaning tools B. Marking tools C. loosening tools D. measuring tools 5. Anything that could hurt you or someone else. A. Risk B. Hazard C. occupational safety D. occupational procedure 6. Which of the following is an input device? A. speaker B. keyboard C. printer D. monitor 7. What kind of input device that optically \"reads\" the image and converts it into a digital signal? A. printer B. webcam C. scanner D. microphone 8. Marco wants to access information on the World Wide Web because he can't nd the answer to his assignment in his notebook. What kind of application software he must use? A. web browser B. internet C. word processing D. business application software 9. Which of the following is primary storage? A. ash drive B. DVD-r C. random access memory D. diskette 10. What is the rst step in data processing wherein data is pulled from available sources? A. data collection B. data interpretation C. data storage D. data input B. Directions: Supply an appropriate word to make each statement complete. Write your answers on a separate sheet of paper. 11. isfare commonly used to print text and photos. 12. Any information that is processed by and sent out from a computer or other electronic device is considered . 13. A computer speaker is an output hardware device that connects to a computer to generate 14. The two types of storage devices are and . 15. A common type of storage is, which uses lasers and lights as its method of reading and writing data. WEEK 2 Performing Computer Operations PLAN AND PREPARE FOR THE TASKS TO BE UNDERTAKEN Planning is part and parcel of achieving a successful task. Your ability to plan will enable you to attain your purpose. Many successful entrepreneurs have realized their success through proper and careful planning. Likewise. aside from planning, you should give importance to preparation. Good preparation will boost your confidence because it means that you are ready to do the task because you have the suffi-cient knowledge about it. The following are some factors to be considered when you plan and prepare for the tasks: 1. PLACE. See to it that the place for doing the task is conducive to work. well-ventilated, clean. and has good lighting. A space provided for freedom to move is important. A place chosen will give youan idea when task is to be done. 2. MATERIALS. Be sure that aside from tools and equipment. necessary materials and fixtures to be used such as bench work manual of specications must be available and ready for use. 3. WASTE DISPOSAL. Used parts or compound substance and used chemical bottles must be disposed in proper storage bin nor container. Non-disposal of used chemical substance invites to environment and poses danger to health. 4. TOOLSIEQUIPMENT. Tools and equipment must match with the task to be done. You should be careful enough to choose tools and equipment that are worthy of use. They must be in good condition so that it can be easily utilized without damaging the parts. 5. SAFETY. Always prioritize safety. Remember that accident is not an excusable incident. can be avoided. Always remember the motto \"Safety rst\". 6. SERVICE PROCEDUREITASK. Identify what task to perform before identifying materials and tools to use. The service procedureltask to employ will tell you the corresponding tools and materials needed. Appropriate tools used with the task will enhance your ability to provide a competitive and efcient service. Assenng & Disassembling Installing a. Cmgunng Cleaning 8. Repair'ng OCCUPATIONAL HEALTH 8: SAFETY GUIDELINES AND PROCEDURES Occupational health and safety (OHS) is a planned system of working to prevent illness and iniury where you work by recognizing and identifying hazards and risks. Health and safety procedure is the responsibility of all persons in the computer and technology in- dustries. You must identify the hazards where you are working and decide how dangerous they are. Elim-inate the hazard or modify the risks that it presents. Common Hazards Encountered by Computer Technician and Users Physical hazard - factor or circumstance that can cause harm with or without contact. They can be classified as type of occupational hazard or environmental hazard. Mechanical hazard It is created as a result of either powered or manual (human) use of tools, equipment or machinery and plant. Chemical hazard A type of occupational hazard cause by exposure to chemicals in the workplace. Exposure to chemicals in the workplace can cause acute or long-term detrimental health effects. Electric Shock hazard Inside computers and electronic equipment, there is a range of voltages from 3.3 volts to 25 volts, most of these are harmless. Cathode Ray Tube (CRT) Monitor High-Voltage hazard A CRT monitor has a high voltage anode inside it, which can carry up to 25,000 volts, and it can still be holding a high charge days after the power is removed. SELECTING APPROPRIATE HARDWARE AND SOFTWARE ACCORDING TO TASK ASSIGNED ANDREOUIRED OUTCOME Computer hardware Includes the physical parts of the computer or electronic device. Hardware is only one part of a computer system. Hardware can be often categorized in to input, output, and storageor processing components. Devices which are not integral part of the CPU are known as peripherals. Pe- ripherals are used in input, storage or output. Peripherals devices such as hard disk, keyboard, printer central processing unit (CPU), monitor, and mouse. It also includes all the parts inside the computer such as the disk drive, motherboard, video card, and many other. By contrast, software is a set of instructions that can be stored and ran by hardware. Hardware is termed because it is \"hard" or rigid with respect to changes, whereas software is \"oft" because it is easyto change. Hardware is typically directed by the software to execute any command or instruction. A combina- tion of hardware and software forms a usable computing system, although other system exist with only hardware. It Common Computer Hardware Components Keyboard- is an input device used to enter characters and functions into the comput-er system by pressing buttons, or keys. It is the primary device used to enter text. A un r:- keyboard typically contains keys for individual letters, numbers and special characters, as well as keys for specific functions 7 Mouse- is an input device that is used with a computer. Moving a mouse along a flat surface\" can move the cursor to different items on the screen. Items can be moved or selected by pressing the mouse buttons (called clicking). Hard Drive- can be used to store any data, including pictures, music, videos, text docu- . ments, and any files created or downloaded. Also, hard drives store files for the operat- ing 3.. system and software programs that run on the computer. Monitor- A display screen used to provide visual output from a computer, cable box, vid- eo camera, VCR or other video generating device. Computer monitors use CRT and LCD technology, while TV monitors use CRT, LCD and plasma technologies. See ana- log monitor, digital monitor and flat panel display. System Unit- is often used to differentiate between the computer and peripheral devices, such as the monitor, keyboard, and mouse. For example, if a repair shop asks you to bring IE-l in your computer, it may be unclear whether you need to bring your monitor and peripheral 1-71.: devices as well. '3 a 1; r __ .x. COMPUTER APLLICATION SOFTWARE Application software (app for short) is a program or group of programs designed for end users. Examples of an application include a word processor, a spreadsheet, accounting application, a web browser, an email client, a media player, a file view, an aeronautical flight simulator, a console game ora photo editor. The collective noun application software refers to all applications collectively. This con- trasts with system computer, which is mainly involved with running the computer. In information technology, an application (app), application program or application software isa computer program designed to help people perform an activity. Depending on the activity for which it was designed, an application can manipulate text, numbers, audio, graphics and a combination of these elements. Some application packages focus on a single task, such as word processing; others, called integrated software include several applications. A computer is a machine that can be programmed to accept data (input), process it into useful information (output), and store it away (in a secondary storage device) for safekeeping or later reuse. Theprocessing of input to output is directed by the software but performed by the hardware. To function, a computer system requires four main aspects of data handling: input, processing, out- put, and storage. The hardware responsible for these four areas operates as follows: 1. Input devices accept data in a form that the computer can use; they then send the data to the pro-cessing unit. 2. The processor, more formally known as the central processing unit (CPU), has the electronic circuitrythat manipulates input data into the information people want. Input technical information Computer software can receive data in the form of an input stream, which is a flowing sequence of data that can be directed to specific functions. The directed channel that the data stream flows is knownas a pipeline, and changing its direction is known as piping. Types of Frog ramIApplication Software 1.Word processing software is used to manipulate a text document, such as a resume or a report. You typically enter text by typing, and the software provides tools for copying, deleting and varioustypes of formatting. Some of the functions of word processing software include: 1. Creating, editing, saving and printing within a document. documents. 3. Formatting text, such as font type, bolding, 2. Copying, pasting, moving and deleting text underlining or italicizing. 4. Creating and editing tables. 6. Correcting spelling and 5. Inserting elements from other software, such as grammar. illustrations or photographs. 2. A web browser is a software application for accessing information on the World Wide Web. When a userrequests a website, the web browser retrieves the necessary content from a web server and then displays the resulting web page on the user's device. 3. The Internet is a global wide area network that connects computer systems across the world. In orderto connect to the Internet, you must have access to an Internet service provider, which acts the middleman between you and the Internet. Data Processing Data processing occurs when data is collected and translated into usable information. It is important for data processing to be done correctly as not to negatively affect the end product or data output. Data processing starts with data in its raw form and converts it into a more readable format (graphs, documents, etc.), giving it the form and context necessary to be interpreted by computers and uti-Iized by employees throughout an organization. Six stages of data processing 1. Data Collection Collecting data is the first step in data processing. Data is pulled from available sources. It is important that the data sources available are trustworthy and well-built, so the data col- lected is of the highest possible Quality. 2. Data Preparation Data preparation, often referred to as \"pro-processing\" is the stage at which raw data is cleaned up and organized for the following stage of data processing. During preparation, raw da-ta is diligently checked for any errors. 3. Data Input The clean data is then entered into its destination and translated into a language that it can understand. 4. Processing During this stage, the data inputted to the computer. Processing is done using machine learning algorithms, though the process itself may vary slightly depending on the source of data being processed and its intended use. 5. Data Outputflnterpretation The outputflnterpretation stage is the stage at which data is finally us able. It is translated, readable, and often in the form of graphs, videos, images, plain text, etc. 6. Data storage The final stage of data processing is storage. After all the data is processed, it is then stored for future use. While some information may be used immediately, much of it will serve a purpose later. Types of Appfication Software Word processing software - This tool is used to create letters, word sheets, type papers etc. Example given MS Word, MS Works, AppleWorks Spreadsheet Software - A tool used to compute number intensive problems like forecasting, budgetingetc. Example given MS Excel, Quattro Pro, Lotus 1-2-3, MS Works. Desktop Publishing Software - This tool is used to create illustrative worksheets, banners, newsletters,signs, gift cards etc. Example given MS Word, MS Publisher, Adobe PageMaker. Database Software - Used to store data like text information, memberships, address etc. which helps users to sort information accordingly. Example given MS Access, FileMaker Pro Communication Software - Allows to connected computers to communicate each other using audio, vid-eo or chat-based medium. Example given MS Net Meeting, IRC, ICQ Presentation Software- Used to create multimedia stacks of cardslscreen. Example given MS Power-Point, Hyper Studio, Flash, Super Card, HyperCard Internet Browsers - This tool allows one to surf the web, read their emails and create web pages. Exam-pie given Netscape Navigator, MS Internet Explorer Email Programs - This software is mainly used to send and receive emails. Example given MS Outlook,Netscape Messenger, Eudora, AOL Browser