Input and Output device
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This document discusses input and output devices for computers. It provides details on common input devices like the keyboard, mouse, scanner, and light pen. The keyboard allows typing data and instructions into the computer. The mouse is a pointing device that detects motion to control a graphical user interface. Scanners convert printed information into digital format. A light pen is used to draw on the computer screen. For output, it describes monitors to display information, printers to produce hard copies, and plotters for high-quality graphics and charts.
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Input and output devices allow a computer to communicate with the outside world. Input devices, like keyboards, mice, and cameras bring information into the computer, while output devices, like monitors, printers, speakers, and plotters send information out of the computer. Some input devices require physical operation, like keyboards and mice, while others are automatic sensors, such as barcode readers. Common output devices include monitors to display information visually and printers to produce hard copies.Recently uploaded (16)
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- 1. MD. MASUD REZA ID:1530185135 Prof. Dr. Md. Khademul Islam Dept. of Computer Science and Eng . Submitted to Submitted by
- 2. Input and Output Devices Presentation on
- 3. INPUT DEVICES The devices which are used to input the data and the programs in the computer are known as "Input Devices". or Input device can read data and convert them to a form that a computer can use. Some of the Input devices are explained below:
- 4. KEYBOARD Keyboard is used in the input phase of a computer-based information system. Keyboard is most common input device is used today. The data and instructions are Google input by typing on the keyboard. The message typed on the keyboard reaches the memory unit of a computer. Its connected to a computer via a cable. A part from alphabet and numeral keys, it has other function keys for performing different functions. Keyboard
- 5. MOUSE Its a pointing device that detects two-dimensional motion relative to a surface. .This motion is typically translated into the motion of a pointer on a display, which allows for fine control of a graphical user interface. Mouse
- 6. SCANNER Scanners are used to enter information directly into the computers memory. This device works like a Xerox machine. The scanner converts any type of printed or written information including photographs into digital pulses, which can be manipulated by the computer. Scanner
- 7. LIGHT PEN This is an input device which is used to draw lines or figures on a computer screen. Its touched to the CRT screen where it can detect raster on the screen as it passes. Light Pen
- 8. OUTPUT DEVICE An output device is any device used to send data from a computer to another device or user. Most computer data output that is meant for humans is in the form of audio or video. Thus, most output devices used by humans are in these categories. Some of the Output devices are explained below:
- 9. MONITORS Monitors, commonly called as Visual Display Unit (VDU), are the main output device of a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form. The sharpness of the image depends upon the number of pixels. monitor
- 10. PRINTER Printer is an output device which is used to show result in hard copy form or in paper form. there are two kinds to choose from: the inkjet and the laser printer. The inkjet printer uses a liquid ink that's sprayed through a print head onto a piece of paper. Laser printers use heat technology and specialized powder called toner or another medium that's heat-sealed onto a piece of paper. Laser printers are somewhat expensive, though they've come down in cost as the technology has increased. Printer
- 11. PLOTTER Plotter is a well known output device which produce high quality graphics in multiple colour. Plotter is Alok Sharma at 06:10 used to create maps, charts etc. on a paper sheet. Some other output devices are terminals, Voice synthesiser, video adaptor, speech synthesizer, projector etc. Plotter
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