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Ict 123 input devices

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Ict 123 input devices

  1. 1. NURIZAH RAMLI 10D0124 DTE
  2. 2. 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
  3. 3. 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)
  4. 4. 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.
  5. 5.  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.
  6. 6. 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.
  7. 7. 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.
  8. 8. Optical scanner Bar code reader
  9. 9. 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.
  10. 10. 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.