Chapter 2 : CS Components

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Chapter 2 : CS Components

  1. 1. CPD 2113 TECHNOLOGY IN ELT Chapter 2 COMPONENTS OF COMPUTER SYSTEM MURNI SALINA B.Sc. Ed (TESL) UTM, Skudai M’sia
  2. 2. COMPONENTS OF A COMPUTER SYSTEM  A computer system has three main components : ◦ Hardware ◦ Software ◦ Warmware  A computer system performs 4 important tasks (Sharp, 2005:35) ◦ ◦ ◦ ◦ Receiving input : figures, facts or sets of instructions Storing information : place in memories Processing the data : act on the information Outputing the information : process and generate results
  3. 3. 4 MAIN ASPECTS OF DATA HANDLING 1. 2. 3. 4. Input devices - accept data or commands in a form that the computer can use: they send the data or commands to the processing unit. The Processor - known as CPU, has electronic circuitry that manipulates input data into information that people require. The CPU execute computer instructions. Output Devices - display the people the processed data; information in understandable and usable form Storage - means secondary storage; consists of secondary storage devices such as hard disk, diskettes, pendrives. - can store data and programmes outside the computer itself. - these devices supplement memory or primary storage, can hold data or programmes temporarily.
  4. 4. 1. What is Input? Input refers to any data or instructions that are used by a computer. All computer processing requires data. Whenever you use computer or application software, you are providing input. You typically use a keyboard to type text and a mouse to issue commands.
  5. 5. Input Devices            Keyboard Mouse Joystick Touch Screen Light Pen Scanner Bar code readers Digital cameras Video cameras Graphic tablets Voice recognition systems
  6. 6. 2. What is Process? The computer manipulates the data to create information. Information refers to data processed into a form that has meaning and is useful.
  7. 7. Processing Devices/System Units Mother board/System  CPU/Microprocessor  Memory – RAM, ROM  Expansion Slots and Cards  System Clock  Bus Lines  Ports and Cables 
  8. 8. 3. What is Output? Is a processed data or information. Output devices provide output to people by translating what the computer has processed into a form that people can understand and use.
  9. 9. Output Devices Monitor – CRT, LCD  LCD projector  Video scan converter  Printer 
  10. 10. 4. What is Storage? Information can be stored in a computer for future use. All computers have a hard disk drive to store programmes and data.
  11. 11. Storage Devices Hard Disk  Removable Disks  ◦ ◦ ◦ ◦ ◦ Floppy Drive CD-ROM, R, RW DVD-ROM, R, RW Pen Drive, Thumb Drive, Zip Drive External Hard Disk
  12. 12. TEST YOUR UNDERSTANDING!
  13. 13. Visualize these components and draw them!        Keyboard Mouse Monitor Speaker Webcam Printer CPU         Mother board Slot Card RAM USB port PS2 port Parallel port Serial port Floppy Drive

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