Other Input Device with Image - Computer Fundamental

 

 

Mouse

 

 A computer mouse is a handheld hardware Input device that controls a cursor in a Graphical user interface and can move and select text, icons, files, and folders on your computer

Mouser work on the following concept

·         Move the Mouse Pointer

·         Open or execute any Program

·         Select the text or object

·         Drag and drop

·         Scroll the page

·         Special work with the right button click

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Joystick

 

 

 

 

 

The joystick is an input device commonly used to control video games. Joysticks consist of a base and a stick that can be moved in any direction. The stick can be moved slowly or quickly and in different amounts. 

 

Light Pen

 

 

A light pen is a computer input device that looks like a pen. The tip of the light pen contains a light-sensitive detector that enables the user to point to or select objects on the display screen. It is not compatible with LCD screens, so it is not in use today. It also helps you draw on the screen if needed. 

 

 Scanner

 A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display. Scanners come in hand-held, feed-in, and flatbed types and for scanning black-and-white or color.

 

Trackball

 

 A trackball is a computer pointing device that can perform the same functions as a mouse. When a user moves the mouse, the ball rolls, causing the pointer on the screen to move. With a trackball, the user simply rolls the ball itself using her fingers or thumb, while the body of the device stays in place. 

 

Microphone

 

  The microphone is a computer input device that is used to input the sound. It receives sound vibrations and converts them into audio signals or sends them to a recording medium. The audio signals are converted into digital data and stored in the computer.

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MICR

 

 

 

  MICR stand for Magnetic Ink Character Recognition, it is used to read printed text with magnetic ink. MICR is a character-recognition technology that makes use of special magnetized ink which is sensitive to magnetic fields. It is widely used in banks to process the cheques.

 

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OCR

 

 

 

 OCR stands for "Optical Character Recognition." OCR taking an image of a letter or book (Digitally typed) and convert the data that the computer understood and modified data or stored on the computer.

Barcode Scanner

 

 

 Bar code scanner / (POS) Point of sale Scanner is a hand-held input device to capture and read the information contained in bar-code (E.g. Product Price at shop or Mall).  A barcode reader works by directing a beam of light across the bar code and measuring the amount of light that is reflected back. The scanner converts the light energy into electrical energy, which is then converted into data by the decoder and forwarded to a computer.

 OMR Scanner

 

    The OMR system is used for MCQ based examinations. OMR Scanner is the process of gathering information from human beings by recognizing marks on a document. OMR is accomplished by using a hardware device (scanner) that detects a reflection or limited light transmittance on or through a piece of paper.

Subjects:

Computer - Input Devices

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