Usage of computer hardware

computer hardware usages

1. Usage Of Computer Hardware Done by Er. Monika Ahuja Army Public School Gwalior

2. Computer Hardware Topic Summary INPUT DEVICES OUTPUT DEVICES STORAGE DEVICES

3. Computer Hardware

4. INPUT DEVICES

5. Introduction Input devices are used to enter data or commands in a form that computer can use. They send the data or commands to the processing unit. According to type of the data they input , they can grouped into the following: Text input devices Pointing input devices Imaging input devices Biometrics input devices

6. Text Input Devices Keyboard :- Usually a standard keyboard has between 80 to 110 keys MICR Reader OCR and Optical Readers OMR and Barcode Readers Magnetic Strip Card Readers

7. Pointing Devices Mouse Trackball Light Pen Touch Screen Touchpad Joystick

8. IMAGING DEVICES Image Scanner Digital camera Digital Video (DV) Camera Web Cam

9. A scanner is a light sensing input device that converts the hard copy documents, image or photograph to a soft copy(electronic version) which can then be stored on a disk. The scanned copy( soft copy) always in the form of image so its extension is .jpg/jpeg To scan the hard copy of any document it is required to install the software in respective computer. Image Scanner

10. Scanner

11. Biometric Input Device A biometric device translates a biological personal characteristic into a digital code that is stored or compared with the digital code that is stored in computer. Fingerprint Scanner Face Recognition Systems Signature Verification Systems

12. OUTPUT DEVICES

13. Introduction An output device is an electromechanical device that accepts data from a computer and translates them in suitable form for the users. Printer Plotter Monitor Projector Voice response system

14. Printer The printer is a device that print the text document and image on the paper. Dot Matrix Inkjet Laser Printer

15. Plotter A plotter is an ideal output device for architects, engineers, and others who need to routinely generate high-precision, hard-copy, graphic output of widely varying sizes. Drum Plotter Flatbed Plotter

16. Projector Screen image projector is an output device used to project information from a computer on a large screen Like monitors, screen image projectors provide a temporary, soft-copy output

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