Module3 system unit

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Module3 system unit

  1. 1. KEMENTERIAN PELAJARAN MALAYSIA Self Access Learning Module ICT Literacy for Secondary School Programme Computer Hardware System Unit PUSAT PERKEMBANGAN KURIKULUM KEMENTERIAN PELAJARAN MALAYSIA
  2. 2. ICTL For Secondary School - Computer Hardware Module MODULE 3 SYSTEM UNIT Curriculum Development Centre Ministry of Education Malaysia 1
  3. 3. ICTL For Secondary School - Computer Hardware Module 1. Name of Module : System Unit 2. Learning Outcomes: The students should be able to: • identify the components of a system unit • state the functions of the main components of a system unit • state the functions of cpu, ram, rom and expansions slots found on the motherboard 3. Knowledge and Skills: • main components in the computer system 4. Module Summary: • • • At the end of the module, a student is able to : identify main components of system unit and motherboard state the functions of main components of system unit state the functions of CPU, RAM, ROM and expansion slot This module contains 2 activities: Activity 1 : Identify the components of a system unit Activity 2 : Identify the components of a motherboard As you are doing this module, use the computer in the lab to identify the components in the system unit. 2
  4. 4. ICTL For Secondary School - Computer Hardware Module Notes: What is system unit? Box-like case that contains computer’s electronic components Sometimes called the chassis Figure 1 Examples of System Unit 3
  5. 5. ICTL For Secondary School - Computer Hardware Module Activity 1 : Identify the components of a system unit Inside view of system unit Figure 2 Inside view of System Unit 4
  6. 6. ICTL For Secondary School - Computer Hardware Module Front layer of a system unit DVD-ROM drive CD-ROM/CD-RW drive Zip drive Empty drive bay Floppy disk drive Power button Reset button Figure 3 Front View of a System Unit 5
  7. 7. ICTL For Secondary School - Computer Hardware Module Input/Output port (I/O port) Power port mouse keyboard USB USB printer (parallel port) serial port speaker monitor microphone game port network telephone line out telephone line in FM reception svideo out cable TV Figure 4 Back View of a System Unit 6
  8. 8. ICTL For Secondary School - Computer Hardware Module Functions of the main components of a system unit No. 1. Components Input/Output port (I/O port) Functions A port is the point at which a peripheral attaches to a system unit so that the peripheral can send data to or receive information from the computer. An external device, such as a keyboard, monitor, printer, mouse and microphone is often attached by a cable to a port on the system unit. The back of the system unit contains so many ports. Some newer personal computers also have ports on the front of the system unit. Ports have different types of connectors. A connector joins a cable to a peripheral. One end of a cable attaches to the connector on the system unit and the other end of the cable attaches to a connector on the peripheral. 2. Power button To start on computer 3. Reset button Kick of soft boot, instructing the computer to go through the process of shutting down, which would clear memory and reset devices to their initialized state. It simply removes power immediately. 4. Motherboard Main circuit board of the system unit, which has some electronic components attached to it and others built into it. 5. Power Supply Convert standard electrical power into the form that computer can use. If a power supply is not providing the necessary power, the computer will not function properly. 6. DVD-ROM drive A device that reads DVD-ROM, also can read audio CDs, CDROMSs, CD-Rs and CD-RWs. 7. CD-ROM drive A device that reads audio CDs, CD-ROMs, CD-Rs and CD-RWs. 8. DVD/CD-RW drive It is a combination drive that reads DVD and CD media, it also writes to CD-RW media. This drive also allows watching a DVD or burn a CD. 9. Zip drive A high-capacity disk drive that reads from and writes on a Zip disk. 10. Floppy drive A device that reads from and writes on a floppy disk 11. Hard disk drive Type of storage device that contains one or more inflexible, circular platters that store data, instructions and information. Also called a hard disk. 7
  9. 9. ICTL For Secondary School - Computer Hardware Module Activity 2 : Identify the components of a motherboard for RAM Expansion slots Figure 5: Layout of a motherboard 8
  10. 10. ICTL For Secondary School - Computer Hardware Module CPU Expansion Slots Expansion Card 9
  11. 11. ICTL For Secondary School - Computer Hardware Module Functions of the components of the motherboard No. 1. Components Functions Central Processing Unit (CPU) A Central Processing Unit or CPU is a microprocessor (or processor for short). It is an integrated circuit chip that is capable of processing electronic signals. The CPU is the most important element in a computer system. A CPU interprets instructions given by the software and carries out those instructions by processing data and controlling the rest of the computer’s components. 2. Random Access Memory (RAM) RAM is installed inside computers. RAM is also known as a working memory. The data in RAM can be read (retrieved) or written (stored). RAM is volatile which means the programs and data in RAM are lost when the computer is powered off. A computer uses RAM to hold temporary instructions and data needed to complete tasks. This enables the computer's CPU (Central Processing Unit) to access instructions and data stored in the memory very quickly. RAM stores data during and after processing. Read Only Memory (ROM) ROM is another type of memory permanently stored inside the computer. ROM is non-volatile. It holds the programs and data when the computer is powered off. Programs in ROM have been pre-recorded. It can only be stored by the manufacturer; once it is done, it cannot be changed. Many complex functions, such as start up operating instructions, translators for high-level languages and operating systems are placed in ROM memory. All the contents in ROM can be accessed and read but cannot be changed. Expansion Slots Expansion slots are the sockets where the circuit boards or the adapter cards can be inserted into the motherboard. It is a place to fit an expansion card containing the circuitry that provides some specialised capability, such as video acceleration, sound or disk drive control. 3. 4. 10
  12. 12. ICTL For Secondary School - Computer Hardware Module Appendix 1 11
  13. 13. ICTL For Secondary School - Computer Hardware Module Worksheet 1 Label the system unit below with the words given. Expansion Cards RAM Power Supply Zip Drive Hard Disk Drive Floppy Drive Mother Board CD/DVD Drive Expansion Slots CPU Chip 12
  14. 14. ICTL For Secondary School - Computer Hardware Module Worksheet 2 Look at the diagram carefully and match them to the name of the ports in the table given using numbers. Label of the ports No 1 Power port USB port VGA port (Monitor display) Serial port (Modem) PS2 port (Mouse) Game port (Joystick) Audio ports (speaker, headphone and microphone) Parallel port (printer port) PS2 port (keyboard) 13
  15. 15. ICTL For Secondary School - Computer Hardware Module Worksheet 3 Names the component parts of the motherboard. 14
  16. 16. ICTL For Secondary School - Computer Hardware Module Worksheet 4 Mark T for True and F for False 1. The processor (CPU) interprets and carries out the basic instructions that operate a computer. 2. Computers can use only one processor at a time. 3. ROM is the main circuit board of the system unit. 4. Expansion slot is a socket on the motherboard that can hold an adapter card. 5. RAM is non-volatile 6. The most important chip on the main circuit board is the microprocessor chip. 7. I/O port is the point at which a peripheral attaches to a system unit so that the peripheral can send data to or receive information from the computer. 8. Reset button is to start on computer. 9. A device that reads from and writes on a floppy disk is called hard disk drives. 10. Power supply convert standard electrical power into the form that computer can use. 15
  17. 17. ICTL For Secondary School - Computer Hardware Module Worksheet 5 Fill in the blank with the correct name of components and functions. No. Components 1. Input/Output port (I/O port) Functions 2. To start on computer 3. Reset button 4. Main circuit board of the system unit, which has some electronic components attached to it and others built into it. 5. Convert standard electrical power into the form that computer can use. 6. DVD-ROM drive 7. CD-ROM drive 8. This drive also allows watching a DVD or burn a CD. 9. A high-capacity disk drive that reads from and writes on a Zip disk. 10. Floppy drive 11. Type of storage device that contains one or more inflexible, circular platters that store data, instructions and information. 16
  18. 18. ICTL For Secondary School - Computer Hardware Module Worksheet 6 Find the differences between primary storage RAM and ROM RAM ROM 17
  19. 19. ICTL For Secondary School - Computer Hardware Module Reference Cashman, S. (2006) Discovering Computers 2006. USA : Thomson Course Technology. Ibrahim Ahmad, Mohd Hafiz et al (2007) Information and Communication Technology (ICT) Based on SPM Syllabus. Selangor: Venton Publishing (M) Sdn Bhd. NCC Education (2002) Computer Studies, Computer Ace. Sri Lanka : Computer Pioneers. IBasic Computing (2003) by TMEdu Tech (M) Sdn Bhd http://www.wikipedia.org http://images.search.yahoo.com http://www.google.com.my CD courseware ICT 18

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