Components of computer system and input-output devices and storage devices


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Components of computer system and input-output devices and storage devices

  2. 2. GROUP 2 CHAPTER 2
  3. 3. Name Id Topic Components of computer system CPU-Control unit CPU-Arithmetic logic unit Operation perfomed by CPU Input devices Output devices Memory & storage devices(RAM) Memory&storage devices(ROM,EPROM, Flash memory, hard disk drives) Processing devices(micro processors) Advantages of computer in personal life & business
  4. 4. RAYHAN IBN ALI ID -13037425
  5. 5. Components of computer system  The processor :  Motherboard  Bus  Cards  Ports  Memory  Hard disk drive  Floppy disk drive  Power supply unit
  6. 6.  The Memory:  Primary memory  Secondary memory  Input Devices:  Key board  Mouse  Floppy disk  Scanner  Micro-phone  Code reader  Output Devices  Monitor  V ideo display  Printer  Projector  Plotter
  7. 7.  Disk Storage :  Hard disk  ROM  Floppy disk  Pen drive  Compacted disk  Programme :  System programme  Application programme
  8. 8. Id-13087430
  10. 10. A component of a computer's central processing unit Control unit
  11. 11.  Implementing the instruction set of the CPU.  Performing the tasks of fetching,  Decoding,  Managing execution  Storing results.  Transferring data to ALU. & Finally, carry out instructions in the software and to direct the flow of data through the computer Functions of the control unit
  15. 15. 10
  16. 16. MACHINE INSTRUCTIONS THAT USE THE ALU SPECIFY FOUR THINGS: The operation to perform. The the first operand (often in a register). The second operand (often in a register). The register that receives the result.
  17. 17. Md.Mukter Hossain ID. No-13047447 Dept. of Marketing University of Rajshahi
  18. 18. TOPIC Operation perform by CPU / Function of CPU
  19. 19. CPU  The CPU is said to be the brains of any computer system. It provides all the timing and control signals necessary to transfer data from one point to another in the system  .  the transfer of data between itself and the memory section  manipulation of data in the memory section or stored internally  the transfer of data between itself and input/output devices
  20. 20. Complet CPU & Chip Card
  21. 21. Functional unit of CPU
  22. 22. CPU has to implement 4 basic functions during instruction cycle 1. fetch 2. decode 3. execute 4. store Operation perform by CPU
  23. 23. CPU function
  24. 24. Fetch Cycle
  25. 25. Decode Cycle
  26. 26. Execute Cycle
  27. 27. Fetch/Decode/Execute/Store Animated fetch decode execute
  28. 28. Sabbir Hossain I.D No: 13087455 B.B.A 2nd Year 1st Semester Department Of Marketing University Of Rajshahi
  29. 29. Topic  Input Devices
  30. 30. WHAT IS INPUT?  Any data or instruction entered into the computer is known as INPUT.  An input device helps you to communicate with the computer.  To enter information and issue commands, you use input devices.  Examples of input devices:  Keyboard  Mouse  Scanner  Microphone  Digital Camera and Web Camera  Joystick
  31. 31. Keyboard  The keyboard is the most common and widely used input device.  It is made up of buttons called 'keys'. The keys are arranged into sections: • Alphabet keys • Function or F keys (F1, F2, F3) • Numeric keys (one set above the alphabet keys and a numeric keypad on the right) • Arrow keys •Command keys (insert, delete, home, end, page up/down)
  32. 32. Image Of Keyboard
  33. 33. Mouse  A mouse is an input devices that fits comfortably under the palm of your hand.  A mouse is a pointing device.  We use mouse to control the movement of the mouse pointer on the screen and to make selections from the screen.  The bottom of a mouse is flat and contains a mechanism that detects the movement of a mouse.
  34. 34. Types Of Mouse  Optical mouse  Mouse in which the ball is replaced by an optical system (light-emitting diode and sensor); it has no movable parts.  Wheel mouse  Mechanical or optical mouse that contains a scroll wheel.  Cordless mouse  Mechanical or optical mouse connected to the computer by infrared or radio signals.
  35. 35. Image of Mouse
  36. 36. Scanner  A scanner is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can use.  The image or text can be saved or changed on the computer.
  37. 37. Types Of Scanner  Bar code reader  Device that uses an optical scanning process to decode information contained in bar codes.  Optical scanner  Equipment that converts a document’s graphics or texts into digital data.
  38. 38. Images Of Scanner Optical scanner Bar code reader
  39. 39. Microphone  Microphone  Device that converts electric pulses into broadcast or recorded sounds.  A microphone allows you to record your voice to the computer.  It also lets you speak to other people using computers or even on the telephone.  A microphone is also called a mic.
  40. 40. Picture Of A microphone
  41. 41. Joystick  A joystick is a pointing device that works on the principle of trackball  To make the movement of the spherical ball easier, it is placed in a socket with a stick mounted on it  On most joysticks, a button on the top is provided to select the option currently pointed to by the cursor  Commonly used for controlling player movements in video or computer games
  42. 42. Various Types Of Joystick
  43. 43. Digital Camera, camcodor And Web Camera  Web camera  Miniature digital camera used to transmit video images in real time or for videoconferencing over the Internet.  Digital camcorder  Portable video camera in which the recording tape is replaced by a processor, which records and stores sounds and images in digital format.  Digital camera  Camera that contains a sensor and a microprocessor rather than film; it records and stores images in digital form, which can then be viewed on a screen.
  44. 44. Picture Of Digital Camera, Camcodor And Web Camera
  45. 45. NAME :MD. SAIFUL ISLAM ID: 13067472
  46. 46.  An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.
  47. 47. Monitor is a TV like device that display information. It can display text as well as graphic images in color or black & white while based on monitor type. Monitors are classified on the basis of color and signals.
  48. 48. Sound cards enable the computer to output sound through speakers. Speakers are required to listen to music and video CD/DVD sound. This also allow us to listen to the computer generated sound. Some monitors have built in speakers.
  49. 49. Headphones give sound output from the computer. They are similar to speakers, except they are worn on the ears so only one person can hear the output at a time.
  50. 50. Printer
  51. 51. A projector is a device that enables an image, such as a computer screen, to be projected onto a flat surface. These devices are commonly used in meetings and presentations as they allow for a large image to be shown so everyone in a room can see.
  52. 52.  This is Zubayear Hosen  ID No is 13107489
  53. 53. Definition of RAM….  RAM stands for Random Access Memory . It is the middleman of CPU and Hard drives . It makes a relationship between CPU and hard drives.  In other words, RAM is the part of computer memory that is used while computer is doing something. It is the short term memory and it’s data storage capacity is volatile because when the electricity is cut off ,then the storage in this memory will be gone. R A M
  54. 54. Function of RAM…  01. It helps to increase the speed of CPU ,so the higher RAM is the higher speed of computer is.  02. It is the temporary memory computer uses to store anything temporarily.  03. It acts as the intermediary between the hard drive and CPU.  04. The data incoming and leaving the CPU passes through the RAM easily  05. It holds all currently running information of computer.  06. To run the application , firstly, it is loaded here and then it works.
  55. 55. Types of RAM..  There are mainly two types of RAM. 01.SRAM 02.DRAM (SRAM) Static RAM is consisted of flip-flop which contains binary bits(0,1). In this RAM the data which is stored is contained as far as the electricity is provided ,other it will be vanished. Features: 01.High speed 02. Costly 03.Does not require any refreshment. 04.Use for cache
  56. 56. DRAM..  Dynamic RAM is a RAM where binary bits(0,1) are contained in capacitor as electronic charge. In DRAM chip ,capacitor is created by MOS transistor .  There are two types of DRAM. 01.SDRAM(synchronous dynamic RAM) 02.ADRAM(Asynchronous dynamic RAM) Features: 01.Relatively low speed. 02.Low cost. 03. Requires refreshing periodically.
  57. 57. MD. RASEL ISLAM Roll-13107497
  58. 58. Topics:  Rom  Types of Rom  Flash Memory  Hard Disk
  59. 59. Rom(Read only memory):  Rom used for storing program and data parmanently. The data and programmes required for some application stored in the rom chip.  Charecteristics: 1. User can only read from it 2. Manufacturer stores instruction into rom memory 3. It is permanent
  60. 60. Types of Rom:  PROM(programmable read only memory)  EPROM(Erasable programmable read only memory)  EEPROM(Electronically Erasable and programmable read only memory)
  61. 61. Flash Memory:  Flash memory is an electronic non volatile computer storage medium that can be electrically erased and reprogrammed.
  62. 62. Hard Disk:  Hard disk drives is the main and usually largest data storage device in a computer.The operating software tytle and most other files are stored in hard disk drive
  63. 63. WELCOME TO PRESENTATION ON Computer in Business Soumen Chakrabarti Class i.d 13117504
  64. 64. What is microprocessor? A microprocessor incorporates in function of a computers central processing unit [cpu] on a single integrated circuit [ic]. Microprocessor is a multipurpose programmable device that accepts digital data as input, process it according to instruction stored in its memory and provides results as output. It is an example of sequential digital logic.
  65. 65. History of microprocessor: At this modern age we get computers at lower cost. General purposes of microprocessor in personal computers are used for computation, tax editing, multimedia display etc. Intel 4004 is the first commercial microprocessor. It introduced in the market in November 1971. It is very important invention of the 20th century
  66. 66. Structure of microprocessor: The microprocessor is also known as the central processing unit[cpu]. IT is the brain of the computers.
  67. 67. Work of microprocessor: Now the computer I use to read this page using a microprocessor to this work. The microprocessor is the heart of any normal computer whether it is desktop machine, a server or a laptop. A microprocessor is a computer processor on a micro chip. The work of microprocessor is given below: 1. For computation 2. Tax editing 3. Communication through internet. 4. Multimedia display.
  68. 68. MD. JUEL RANA Id : 13067508
  69. 69. Advantage of computer in our business life  Organization  Self-Sufficiency  Speed  Sales  Accounting & Finance  Communication  Documents/ Presentation  Research