A barcode reader, also called a price scanner or point-of-sale ( POS ) scanner, is a hand-held or stationary input device used to capture and read information contained in a bar code . It is a stick having a spherical ball at its both lower and upper ends. You view the options available to you on the screen (output) and you then use your finger to touch the option that you have chosen (input). Since the whole device is not moved, a track ball requires less space than a mouse. A mouse can be used to control the position of the cursor on the screen, but it cannot be used to enter text into the computer. In this case, the printer does the … It is composed of computer software and computer and output device (laser printer, laser plotter) interfaces to form a pre-screen computer processing system. Audio-input device: an audio-input device records analog sound and translate it for digital storage and processing. Flatbed scanning devices are the most popular optical scanners. Microphone for voice as input. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices. Joystick is also a pointing device, which is used to move the cursor position on a monitor screen. A scanner works by shining a beam of light onto the surface of the object that you are scanning. Your barcode scanner manufacturer may also have a vendor specific driver that supports the UWP Barcode … Today scanners have been put onto some Printers. Data may enter an information system in a variety of different ways, and the input device that is most appropriate will usually depend on the type of data being entered into the system, how frequently this is done, and who is responsible for the activity. A barcode reader consists of a scanner , a decoder (either built-in or external), and a cable used to connect the reader with a computer. You could use the Raw Input API to distinguish between the keyboard and the scanner like I did recently. Question: Who Said There Is No Peace Without War? What input device might a multi-choice questionnaire writer use to input completed forms into a computer. Optical scanner, Computer input device that uses a light beam to scan codes, text, or graphic images directly into a computer or computer system. This light is then reflected back onto a sensor that detects the colour of the light. In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. OCR scans the text optically, character by character, converts them into a machine readable code, and stores the text on the system memory. Bar-code scanners are used widely at point-of-sale terminals in retail stores. This was last updated in May 2010 Most scanners are flatbed devices, which means they have a flat scanning surface. From which we input the raw data in the computer system for further processing. Scanners come in high- and low-resolution versions, and can scan images in either black-and-white or color. Mouse is the most popular pointing device. It is specially used for checking the answer sheets of examinations having multiple choice questions. Bar Code Reader scans a bar code image, converts it into an alphanumeric value, which is then fed to the computer that the bar code reader is connected to. These may be stand-alone devices or all-in-one scanners with print capabilities. and strings. The keys on the keyboard are as follows −. Quick Answer: What Job You Can Do From Home? mechanical motion, audio, visual, etc.) Light pen is a pointing device similar to a pen. The microphone is used for various applications such as adding sound to a multimedia presentation or for mixing music. 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