input devices. keyboard most common input device for a computer
TRANSCRIPT
- Slide 1
- INPUT DEVICES
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- KEYBOARD Most common input device for a computer.
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- Mouse A hand held pointing device that moves a pointer on the screen.
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- Joystick A stick that translates movement to the screen. Commonly used in video games and flight simulators.
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- Trackball A moveable ball that moves the pointer around the screen
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- Touch Pad Flat surface that is sensitive to pressure and motion. It tracks your finger and the mouse cursor corresponds to the movement.
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- Light Pen A pen that detects input via light on a screen. It allows a user to write information on a screen.
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- Touch Screen/ Terminal Touch screen that user interacts with to get information.
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- Digitising Tablet Used to enter drawings and sketches onto a screen and store them in digital form.
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- Voice Recognition The devices accepts voice commands and carries them out.
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- Sound Capture Devices Sound Cards that capture voice and turn it into digital form.
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- Webcam Used for video chatting and video conferencing.
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- Sensors Used to capture data and monitor changes in states. Used in weather and security systems.
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- Remote Controls Emits a wireless Signal to the device it controls.
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- Biometric A reader that checks the distinctive characteristics of a human to identify them. Typically used in fingerprint readers.
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- Digital Camera They contain a processor that converts the real image to a digital image.
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- Barcode Reader Reads the code of lines that make up a barcode. Typically used in supermarkets.
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- OMR Optical Mark Reader. Reads small marks on special forms. Eg. Surveys and questionares and exam papers
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- OCR Optical character recognition devices. Can read handwritten and printed characters and convert them to an electronic form to be edited. Eg. Scanners
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- MICR Magnetic ink character recognition reader. Reads text printed with magnetic ink. Eg. Used at banks in processing cheques.
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- POS Point of Sale. Consists of a main computer and a device to scan the barcode.
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