Information and Communication Technology Computer Systems Servicing (CSS) Quarter 0-Module 7 Testing Electronic Components 8 CO_Q0_ICT8_Module7
CO_Q0_ICT8_Module7 ICT – Computer System Servicing - Grade 8 Alternative Delivery Mode Quarter 0-Module 7: Testing Electronic Components First Edition, 2020 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio Printed in the Philippines by ________________________ Department of Education – Caraga Region XIII, Learning Resource Management System (LRMS) Office Address: J.P. Rosales Avenue, Butuan City, Philippines 8600 Telefax / Telephone: (085) 817-7141 E-mail Address: [email protected] Development Team of the Module Writers: Patrick Jasson S. Pojas and Zin Jay P. Ortega Editors: Grace A. Ando, Nilo R. Verdon, Bernie R. Pamplona, Avelina C.Duquesa, Rowena S. Timcang, Jeho Ranin, Arlyn C. Galbo, Junel M. Anino, Reynan S. Basilio, Junaline Mores Reviewers: Rose Jean V. Robles, Ivy H. Beldad Illustrator: Eduardo D. Ayo, Jr. and Franz Vincent Roman T. More Layout Artist: Bernie R. Pamplona and Junel M. Anino Management Team: Francis Cesar B. Bringas Isidro M. Biol Jr. Maripaz F. Magno Josephine Chonie M. Obseňares Romeo O. Aprovechar Rayfrocina T. Abao Grace A. Ando
CO_Q0_ICT8_Module7 8 Information and Communication Technology Computer Systems Servicing (CSS) Quarter 0-Module 7 Testing Electronic Components
2 CO_Q0_ICT8_Module7 Introductory Message This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson. Each SLM is composed of different parts. Each part shall guide you step-bystep as you discover and understand the lesson prepared for you. Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to self-check your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these. In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning. Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task. If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Thank you.
3 CO_Q0_ICT8_Module7 What I Need to Know This module was designed and written with you in mind. It is here to help you master the Computer Electronic Components. The scope of this module permits it to be used in many different learning situations. The language used recognizes the diverse vocabulary level of students. The lessons are arranged to follow the standard sequence of the course. But the order in which you read them can be changed to correspond with the textbook you are now using. Learning Outcome 1 – Determine criteria for testing electronic components (TLE_IACSS9- 12TEC-IVa-c24) Learning Outcome 2 – Plan an approach for components testing (TLE_IACSS912TEC-IVc-e25) After going through this module, you are expected to: LO 1 – Determine criteria for testing electronic components 1.1 Define testing criteria to ensure that components meet technical and quality requirements LO 2 – Plan an approach for components testing 2.1 Identify various testing methods based on types of electronic components; 2.2 Determine characteristics and appropriateness of testing methods to be used during development and on completion; 2.3 Develop plans for testing components at specified points during development and on completion; and 2.4 Prepare and check required test and measuring instruments and tools in accordance with established procedures;
4 CO_Q0_ICT8_Module7 What I Know Pre-test Direction: Read carefully the questions and choose the letter of the correct answer. Write the chosen letter in your activity notebook 1. The basic component discrete device or physical entity inside in the computer system. A. Battery B. Capacitor C. Electronic D. Metal 2. It is a component that has a number of electrical terminals or leads. A. Diode B. Electronic C. Multimeter D. Screw 3. A tool that generates a tone that travels the length of the cable. A. Hot-meter B. Multimeter C. Ohmmeter D. Toner probe 4. It refers to an electronic instrument used to measure the three basic electrical characteristics like voltage, current and resistance. A. Ohmmeter B. Multimeter C. Thermometer D. Toner probe 5. What do you call that electrical instrument measures electrical resistance? A. Ohmmeter B. Multimeter C Thermometer D Toner probe 6. A handheld device with a needle over a numeric Liquid Crystal Display (LCD) displayed digitally for indication purposes is called A. Ohmmeter B. Multimeter C. Thermometer D. Toner probe
5 CO_Q0_ICT8_Module7 7. It is a metering tool designed with a small battery to apply a voltage. A. Ohmmeter B. Multimeter C. Thermometer D. Toner probe 8. What kit that is highly required to prepare for any unexpected happening while testing and checking? A. Athlete training kit B. Emergency kit C. First age kit D. Make up kit 9. Which tool is used for picking up objects too small to be easily handled with the human fingers specially a small electronic component of the computer that is very sensitive to handle? A. Flyer tool B. Iron tool C Toolbox D. Tweezer 10. It refers to a metal alloy commonly comprised of tin or lead that melts when heated and allows a permanent connection to be made between electronic parts or wires. A. Battery B. Capacitor C. Diode D. Solder 11.This plan is important for the technical working area, it gives instruction to the person where to evacuate if in case of emergency. A. Building plan B. Emergency exit plan C. Lesson plan D. Mechanical plan 12.It is a practice that can help control or eliminate workplace hazards and accidents due to some tools or hazardous materials. A. Housekeeping B. Reviewing C. Studying D. Training
6 CO_Q0_ICT8_Module7 13.The floormat or table mat that reduces the risk of electrostatic discharge while working with electrostatic sensitive equipment especially electronic components. A. Anti-static mat B. Floor mat C. Pro-statically mat D. Table mat 14.It is one of the most important Personal Protective Equipment (PPE) that will help protect your eyes from any accident while working. A. Wearing Eye Glass B. Wearing Goggles C. Wearing Sun Glass B. Wearing Visor Glass 15. The essential procedure of checking all equipment and tools found in the workplace either functional or need to be replaced. A. Auditing B. Inventory C. Planning D. Replacing
7 CO_Q0_ICT8_Module7 Lesson 6 Determining and Planning for Electronic Components Electronic components are basic discrete devices or physical entity in an electronic system (computer system) used to affect electrons of their associated fields. These are mostly industrial products available in singular form but the same functions as to electrical elements which are conceptual abstraction representing idealized electronic components. Electronic components have a number of electrical terminals or leads. These leads connect to other electrical components, often over wire, to create electronic circuit with a particular function (for example: computer sent data to printer for printing output). Basically, electronic components may be package discretely, as arrays or networks of like components, or integrated inside an electronic machine (computer system). What’s In Activity: Complete me! Direction: Fill in the blank with the missing letter to complete the word. Write your answer in your activity notebook. 1. It is a passive two-terminal electrical component that implements electrical resistance as a circuit element. R __ S __ S __ T __ R 2. It is a device that stores electrical energy in an electric field. __ A __ A __ I __ O R 3. It is a two-terminal electronic component that conducts current primarily in one direction. __ __ I D E 4. It is a semiconductor device used to amplify or switch electronic signals and electrical power. __ R __ __ S I __ __ O R 5. It is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. __ __ S E
8 CO_Q0_ICT8_Module7 What’s New Activity: Real Life Event! Direction: In this activity you will give your own self-understanding in essay form. Write your answer in your activity notebook. In this modern world, different devices have been developed and enhanced for the advancement and meet the user satisfaction. Many gadgets and appliances are digitalized their performance, for example from Film Camera that is limited photos and developed the captured photos into dark room using the manual process to up to Digital Camera that automatically produce output using softcopy or hardcopy and with unlimited taking of pictures depending how bigger your memory card can store. In your generation today, how will you define technology as part of your lives and what are those changing scenario that technology had cover from manual operation to automatic operation? Can you give your observation base on your experience you encountered? What is It Computer Electronic Components An electronic circuit is a structure that directs and controls electric current to perform various functions including signal amplification, computation, and data transfer. It comprises several different components such as resistors, transistors, capacitors, inductors, and diodes. Different Methods in Testing an Electronic Component A. Automated is a method using tools that are capable of executing tests, reporting outcomes and comparing results with earlier test runs. Tests carried out with these tools can be run repeatedly, at any time of the day. The method or process being used to implement automation is called a test automation framework.
9 CO_Q0_ICT8_Module7 B. Debugging is part of the software testing process and an integral part of the entire software development lifecycle. The debugging process starts a soon as code is written and continues in successive stages and combined with other units of programming to form a software product. C. Inspection is an organized examination or formal evaluation exercise. In engineering activities, inspection involves the measurements, tests, and gauges applied to certain characteristics in regard to an object or activity. It is a test headed by a person using procedures, processes and measurements to meet certain standards or requirements. D. Platform testing also called an Open Test Standard (OTS) which is a set of specifications defining test methods for diverse components of computer and electronic systems to be marketed as complete products. It requires a platform or a medium. E. Prototyping is a manner of releasing a new model or design unit. It allows the designer and client to assess the viability of a design. Testing Strategy Passive testing is a process of testing the electronic components that do not have the ability to control electric current by means of another electrical signal. Examples: Capacitors, resistors, inductors, transformers, and some diodes Electronic components, both active and passive, are lifeline of any printed circuit board assembly. They both play vital roles in the functioning of any electronic device. Dynamic testing is an electronic test that place a wide range of performance demands on static and dynamic test equipment. The equipment is used to validate new designs, improve manufacturing processes and prove the quality of end products. Mechanical testing requirements involve static, dynamic and fatigue testing in tensile, compression, shear test modes. - Testing the mechanical endurance and integrity of electronics components and assemblies is important to validate designs, improve manufacturing and ensure the reliability of final products. In- Circuit Testing is a test of equipment that provides a useful and efficient form of printed circuit board test by measuring each component one at a time to check that it is place and of the correct value. As most faults on a board arise out of the manufacturing process and usually consist of short circuits, open circuits or wrong components, this form of testing catches most of the problem on a board. These can easily be checked using simple measurements or resistance, capacitance, and sometimes inductance between two points on the circuit board.
10 CO_Q0_ICT8_Module7 Elements of In-Circuits Test Equipment a. In circuit tester - The in-circuit test system consists of a matrix of drivers and sensors that are used to set up and perform the measurements. There may be 1000 or more of these driver sensors points. These are normally taken to a large connector conveniently located on the system. b. Fixture – This is the variety of boards designed specifically for a particular board and acts as an interface between the board and the in-circuit tester. The in-circuit test system connector interfaces with the second part of the tester which is the fixture. It takes the connections for the driver sensor points and routes them directly to the relevant points on the board using a “bed of nails”. c. Software - It is written for each board type that can be tested. It instructs the test system what tests to perform between what points and details of the pass/fail criteria. Proper Procedures and Basic Guidelines in Testing Electronic Components of the Computer Testing and checking electronic components of a computer is a risky procedure to the person/learners without prior knowledge. Electronic components consist of hazardous materials and elements such as electricity, mercury or any harmful chemical part of every electronic device. Before you undergo in testing and checking, proper procedure must follow and observed. 1. Planning Planning is the procedure that must be followed accordingly to the cycle of computer machines, specifically in terms of troubleshooting. Troubleshooting is a step-by-step procedure conducted by technical experts with proper skills and knowledge. Before you perform testing and checking, the peripherals of the computer especially electronic components, proper planning is highly required to do before the actions are applied. Remember that the electronic components are hazardous parts of the computer. In performing the required testing process, there are lots of considerations you need to give an action, always ready the list of your condition and action in order to perform the proper procedure, you must do this follow planning guide: a. Housekeeping helps control or eliminate workplace hazards. Poor housekeeping practices frequently contribute to incidents. If
11 CO_Q0_ICT8_Module7 the sight of paper, debris, clutter and spills is accepted as normal, then other more serious hazards may be taken for granted. b. Emergency Kit is highly required to prepare for any unexpected happening while testing and checking. Some of the electronic components of computer are in metallic frame or elements that have a sharp edge of lines, or voltage problems that can cause fire or short-circuit problems. c. Emergency Exit Plan is one of the requirements for planning to ensure that every technical working area is safe for everybody working around if in case of emergency that need to leave the area as soon as possible considering that computer systems are composed of different electrical and electronic device that accepts electricity. d. Prepare appropriate troubleshooting tools/equipment are the most important for troubleshooting, their specific functions are highly needed to fix and supplement to do the work. Before you begin the task, make sure that all of your tools are functional and in good condition to ensure safety. Remember some tools are dangerous to use if not in good condition or damage. It can cause trouble to the user or to the machine itself. e. Safety Measures Whenever you are working on any electronic equipment, your own safety has come to first. Every electronic component of computers can give you danger or risky element in every time you’re working with. Electricity must be handled properly or else it can injure or cause fatalities to a person. The following are some safety measures to observe: Always turn off the equipment and unplug it before you begin to work. If you have to run testing while the equipment is operating, turn the equipment on and make sure you test carefully, and then turn off the equipment again. Wear rubber gloves and shoes before you begin to test. Try to do the work with one hand, while keeping the other in your pocket. That keeps the possible current paths away from your heart. Don’t attempt test or checking when you are tired or in a rush. Always assume that all electronic parts of the computer have always electrical charge even if you turn off the main power source. 2. Preparing In Computer Systems Servicing, preparing some tools and equipment is a good practice in any cost. It is important in giving a satisfaction to a technical person to do a work when all of his/her needs like
12 CO_Q0_ICT8_Module7 (equipment/tools/materials) are ready to be used. Conditioning the tools and equipment in preparation for technical troubleshooting will help solve the problems and maintain the consistency of the computer. Tools Needed to Prepare Before Checking Electronic Components Functions and characteristics Tool’s Name An antistatic wrist strap or antistatic strap wraps around your wrist like a bracelet, with a conductive cord attached to the computer. This strap keeps the user grounded, which helps prevent electrostatic damage (ESD) to a computer or any other electrostatic sensitive device. The picture shows a wrist strap with detachable strap around a wrist. Screw drivers have only two purposes: to insert/drive screws and to remove them. While types of screw drivers are defined by tips that match the specific design of specific screw heads. A flashlight or mini flashlight is also one of the tools in computer troubleshooting. There are parts of the computer components that are too small in pieces and located in dark areas or some of electronic components that need to be checked and see the condition and its physical appearance. Alternatively referred to as a grounding mat. It is a floor or table mat that reduces the risk of electrostatic discharge while working with electrostatic sensitive equipment especially electronic components that consist of electricity. Anti-static wrist trap Screwdrivers Mini flashlight Anti-Static Mat
13 CO_Q0_ICT8_Module7 Compressed air is a combination of under pressure gases that are squeezed into a can. With computers and electronics, compressed air is the preferred method for removing dust and dirt from sensitive electronics. The picture shows an example of a typical compressed air can that is used to clean computer components. In this example, you would point the nozzle of the can in the direction you want the air to be blown and then squeeze the trigger. Alternatively referred to as a circuit analyzer, multi-tester, or VOM (Volt-OhmMeter). A multimeter is a device used to test and measure current, voltage, and resistance. It also connects to a circuit using two (red and black/positive and negative) probes. The picture shows an example of a digital multimeter. An antistatic bag is a packaging material that is specially designed to help prevent static electricity interacting with sensitive electronic components. These bags are made of plastic polyethylene terephthalate and often used to store and transfer electrostatic sensitive equipment. They come in many different sizes, from small bags for RAM chips to big bags for motherboards. Many antistatic bags have a silver color and are semi-reflective, while others are mostly clear and black, blue, or pink. A lint free cloth is a special type of cleaning cloth that does not give up any fluff when used. Being free of lint means the cloth is less likely to build up a charge, which can cause Electro Static Discharge (ESD), damaging electronic equipment like High Definition (HD) televisions, computer monitors and digital cameras. Compressed Air Can Multimeter Anti-static Bag Lint Free Cloth
14 CO_Q0_ICT8_Module7 Solder is a metal alloy commonly comprised of tin or lead that melts when heated and allows a permanent connection to be made between electronic parts or wires. Some of electronic components of the computer are attached and soldered by this material. Tweezer is a small tool used for picking up too small objects to be easily handled with the human fingers especially small electronic component of the computer that is very sensitive to handle. Appropriate Testing Procedures of the Electronic Components Safety First 1. Electrical shock – Once you open up a set cover, you are actually exposing yourself to the threat of electric shock. Always keep in mind that safety comes first. A serious shock may stop your heart and if large electric current flows through your body, you will receive a serious burn and may cause death. So, don’t let yourself out of the mind that electronic components of the computer are just only a piece that will harm or kill you. 2. Discharging Switch Mode Power Supply - Before you start to work on a power supply, always turn off the power and discharge the electric charge inside. Most of electronic components of the computer have an electrical current not lesser than 400 voltage after turning off the machine, the current inside the electronic components are actively circulating inside the components. Always bear in mind that most of the time when you are touching any parts of the electronic components even after you turn off the power supply or unplug the power chord from the power source, some electronic components are still having electric current inside that can harm you. 3. Isolation transformer – When receiving any electronic equipment, always use an isolation transformer to protect yourself from electrical shock. During working, the isolation transformer is connected between the equipment and Alternating Current (AC) power line. 4. High voltage – The high voltage circuit inside the computer components can give you a dangerous electric shock and cause you to injury condition. You could cut yourself by accidentally knocking on sharp chassis edges. Be familiar with the high voltage electronic components before testing and checking every single piece of electronic components of computer. Solder Tweezer
15 CO_Q0_ICT8_Module7 5. Wearing goggles – One of the most important Personal Protective Equipment (PPE) is the goggles. Wearing goggles while repairing, checking and testing computer is highly required, especially that computer consists of tiny pieces of electronic components that can harm your eyes. 6. Fire – Refrain from playing with the electronic components of the computer because every piece of the electronic component consists of high voltage of electricity that can cause fire or burning of components. 7. Ventilation – Be sure that your working area has a good ventilation. Prolong exposure or excessive inhalation of vapors from a chemical element coming from electronic components can cause harmful effects to your health. Common Testing Equipment and Their Characteristics An Ohmmeter is an electrical instrument that measures electrical resistance. Originally, ohmmeter is designed with a small battery to apply a voltage to a resistance. Resistance values are measured in ohms (Ω). There are two kinds of ohmmeter: Micro-ohmmeter is used to measure small value of resistance. Meg-ohmmeter is used to make large resistance measurements. A multimeter is an electronic instrument used to measure the three basic electrical characteristics: voltage, current and resistance. It has multiple functions and acts like ohmmeter, voltmeter and ammeter and also used for household wiring, electric motors, testing batteries and power supplies. The multimeter is a handheld device with a needle over a numeric LCD digital display for indication purpose. It is also used to test continuity between two points in an electrical circuit. Ohmmeter Multimeter
16 CO_Q0_ICT8_Module7 The toner probe is a two-part tool. The toner part is connected to a cable at one end using specific adapters, such as an RJ-45, coaxial, or metal clips. The toner generates a tone that travels the length of the cable. The probe part traces the cable. When the probe is in near proximity to the cable to which the toner is attached, the tone can be heard through a speaker in the probe. Recording and Documentation of Your Result in Checking and Testing Electronic Components Laboratory documentation, whether paper or electronic recording is an essential part of technical side. Required documents include laboratory’s policies, processes and procedures that generate results of development in testing or troubleshooting. 1. Documents are used to check the product’s name, model and brand of the components where you want to test and use. It is important for you to establish familiarization of the components identity and description before you work on it. Every electronic component has their own capability and different standards of product. 2. Records provide evidence that the activities were performed. They contain details as to the timelines, processes involved and the results obtained. 3. Documentation is used to describe any policy, procedure, or manual log. It allows you to easily review and track the development of your previous activities. 4. Equipment/Tools maintenance proper maintenance, according to the manufacturer’s procedure is essential. It can give you information and idea whether the equipment/tools are ready to do a certain task and which tools are highly required to be replaced to enable you to purchase new tools to use. 5. Inventory is an essential procedure in documentation process. It is the most important part to check the quantity of the tools which are repairable, replaceable and useful. Toner probe
17 CO_Q0_ICT8_Module7 Activity 1: Discover Me! Direction: Complete the table by supplying the needed data. Name of Electronic Appliances Electronic Component/Part Usually Damaged (Give at least 2 components) Example: Speakers Power cord, volume button Computer TV Cellphone How do you know that the appliance is already damaged? ________________________________________________________________________ ________________________________________________________________________ What are the possible causes of these damages? ________________________________________________________________________ ________________________________________________________________________ Activity 2: What’s Best for Me! Direction: Read carefully and identify the word/s being described. Select your answer from the choices given. Write it in your activity notebook. Choices: Automated | Debugging | Inspection | Platform Testing | Prototyping 1. It is an organized examination or formal evaluation exercise. This method involves a test headed by a person using procedures, processes and measurements to meet certain standards or requirements. 2. This is a manner of releasing a new model or design unit. It allows the designer and client to assess the viability of a design. 3. It is a method using tools that are capable of executing tests, reporting outcomes and comparing results with earlier test runs. 4. This process starts a soon as code is written and continues in successive stages and combined with other units of programming to form a software product. 5. This method is also called an Open Test Standard (OTS) which is a set of specifications defining test methods for diverse components of computer and electronic systems to be marketed as complete products. What’s More
18 CO_Q0_ICT8_Module7 What I Have Learned Activity: Arrange Me! Directions: Identify the following tools by arranging the letters to form the correct name. Write your answer in your activity notebook. 1. M E R T E L I M U T 1. ________________ 2. W E E R T E Z 2. __________________ 3. T R Y T E A B 3. ___________________ 4. L O R E D S 4 ____________________ 5. S C O T L H 5 ____________________
19 CO_Q0_ICT8_Module7 What I Can Do Activity: It’s Okay to Be Wise Directions: Give your most appropriate action to the situation given below. Write the answer in your activity notebook. 1. You accidentally dropped your phone in a pail of water. What will you do to find out the condition of your phone? ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ 2. You are encoding your report on a laptop computer, suddenly your computer prompted you, “Not responding”. What will you do? ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ Rubric Description Rating/Point Very informative and well explained 10 points Somewhat informative and well explained 8 points Give somewhat idea but poorly explained 6 points Did not give an idea and did not explained well 0 points *sir reynan
20 CO_Q0_ICT8_Module7 Assessment Post-test Directions: Read carefully the questions and choose the letter of the correct answer. Write the chosen letter in your activity notebook. 1. This tool is a handheld device with a needle over a numeric LCD digital display for indication purpose. A. Multimeter B. Ohmmeter C. Thermometer D. Toner probe 2. This tool can generate a tone that travels the length of the cable. A. Hot-meter B. Multimeter C. Ohmmeter D. Toner probe 3. This type of metal is alloy commonly comprised of tin or lead that melts when heated and allows a permanent connection to be made between electronic parts or wires. A. Battery B. Capacitor C. Diode D. Solder 4. This type of Proper Protective Equipment (PPE) will help and protect your eyes from any accidents while working. A. Eye Glass B. Goggles C. Sun glass D. Visor Glass 5. This basic electronic component is a discrete device or a physical entity that can be found inside in the computer system. A. Battery B. Capacitor C. Electronic D. Metal
21 CO_Q0_ICT8_Module7 6. This tool used for picking up too small objects to be easily handled with the human fingers specially a small electronic component of the computer that is very sensitive to handle. A. Flyer tool B. Iron tool C. Toolbox D. Tweezer 7. It is an electrical instrument can measure electrical resistance. A. Multimeter B. Ohmmeter C. Thermometer D. Toner probe 8. This kit is highly required to prepare for any unexpected happening like accidents while testing and checking. A. Athlete training kit B. Emergency kit C. First Aid kit D. Make up kit 9. It is an essential procedure in documentation process. It is the most important part to check the quantity of the tools which are repairable, replaceable and useful. A. Auditing B. Inventory C. Planning D. Replacing 10. This mat can reduce the risk of electrostatic discharge while working with electrostatic sensitive equipment especially electronic components. A. Anti-static mat B. Floor mat C. Pro-statically mat D. Table mat 11. The following are planning procedures that must be followed accordingly to the cycle of computer machines, specifically in terms of troubleshooting, EXCEPT: A. Emergency Exit Plan B. Housekeeping C. Safety Measures D. Safety Mechanics
22 CO_Q0_ICT8_Module7 12.This electrical instrument can measure electrical resistance. A. Ohmmeter B. Multimeter C. Thermometer D. Toner probe 13.This metering tool device is designed with a small battery to apply a voltage. A. Ohmmeter B. Multimeter C. Thermometer D. Toner probe 14. Which of the following refers to a manner of releasing a new model or design unit and allows the designer and client to assess the viability of a design? A. Inspection B. Prototyping C. Troubleshooting D. Ventilation 15.This practice helps control or eliminates workplace hazards and accidents in the working place due to some tools or hazardous materials. A. Reviewing B. Housekeeping C. Training D. Studying
23 CO_Q0_ICT8_Module7 Additional Activities Activity: Gaining and Building Ideas! Directions: Make a sequential presentation of the Basic Guidelines in Testing Electronic Components of the Computer through the graphic organizer below. Do it in your activity notebook. Basic Guidelines in Testing Electronic Components of the Computer
24 CO_Q0_ICT8_Module7 Answer Key Assessment A 1. D 2. C 3. B 4. C 5. D 6. B 7. B 8. B 9. A 10. D 11. A 12. A 13. B 14. B 15. learned What I’ve Multimeter 1. Tweezer 2. Battery 3. Solder 4. Cloths 5. What I Know D 1. C 2. D 3. B 4. A 5. B 6. A 7. C 8. A 9. B 10. D 11. D 12. C 13. A 14. B 15. What can I do Resistor 1. Capacitor 2. Diodes 3. Transistor 4. Inductor 5. Integrated Circuit 6. Microcontroller 7. Transformer 8. Battery 9. Fuse 10. Additional Activity Ohmmeter 1. Multimeter 2. Solder 3. Electronic 4. Components 5. Capacitor 6. Resistor 7. Battery 8. Rubber 9. Diodes 10. What’s In Resistor 1. Capacitor 2. Diode 3. Transistor 4. Fuse 5.
25 CO_Q0_ICT8_Module7 References 14 Essentials Electronic Components. Accessed on July 5, 2020. Retrieved from https://www.alliedcomponents.com/blog/essential-electroniccomponents-functions/ Electronic Testing Equipment and their types. Accessed on July 5, 2020. Retrieved from https://www.elprocus.com/types-of-electronic-testingequipments/ IT Essentials: Computer Lab Procedures and Tool Use. Accessed on July 5, 2020. Retrieved from shorturl.at/no126 Photo Credits “Transistor”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Capacitor”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Ohmmeter”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Multimeter”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Transistor”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Anti-static mat”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Fuse”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Transformer”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Tone probe”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020 “Tweezer”. Retrieved from https://www.computerhope.com/jargon/t/tools.htm June 5, 2020
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