INPUT DEVICE

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COMPUTER SYSTEM : INPUT DEVICE

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INPUT DEVICE

  1. 1. CHAPTER 2: COMPUTERSYSTEMSHardware
  2. 2. At the end of the lesson, student shouldbe able to: Define the meaning of input Define the meaning of input devices Identify the input devices used for text, graphic, audio and video
  3. 3. Input Input is any data and instructions entered into the memory of a computer There are four types of input which are: Text Graphic Audio Video
  4. 4. Input Devices Input device is any hardware component that allows users to enter data and instructions into a computer. Examples of input devices are: i) Keyboard ii) Scanner iii) Microphone iv) Mouse v) Webcam
  5. 5. A) Input Devices for Text Input Device Explanation PictureKeyboard  Input device that contains key users press to enter data and instructions into a computer  We can enter data such as text and commands into a computer by pressing the keys on the keyboardBarcode reader  A barcode reader is a device that uses a light source to read bar codes and then converts them into digital data that a computer can process
  6. 6. B) Input Devices for Graphics Input Device Explanation PictureDigital camera  A digital camera allows you to take picture and store the photograph images digitallyScanner  A scanner is a device that capture image from photographic prints, posters, magazines pages and similar sources for computer editing and display
  7. 7. C) Input Devices for Audio Input Device Explanation PictureMicrophone  Input device that we used to record audio or give command to the computerMIDI keyboard MIDI keyboard is a musical instrument that we used to play music
  8. 8. D) Input Devices for Video Input Device Explanation PictureDigital video  A digital video camera allows us tocamera record full motion and store the capture motion digitalWebcam A webcam is any video camera that displays its output on a web pageCCTV A Closed-Circuit Television (CCTV) video camera is a type of digital video camera that enables a home or small business user to capture video and still images
  9. 9. E) Pointing DevicePointing Device Picture DefinitionMouse  A mouse is a small plastic box with buttons on top and a rolling ball or optical ‘reader’ underneathPointing stick  A pressure-sensitive pointing device shape like pencil eraser positioned between keys on a keypadTouchpad  A small, flat, rectangle pointing device that is sensitive to pressure and motion deviceJoystick  An input device with a vertical lever moved to control pointing devices or on-screen objectsTrackball  A stationary pointing device with a ball on top or sideGamepad  A gamepad is the most common kind of game controller, held in both hands with thumbs and fingers used to provide input

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