Peripheral Devices
- Created by: rbird123
- Created on: 28-11-20 16:06
Peripheral Devices and Media
Input devices
Examples of input devices: keyboard, mice, joysticks, and touchscreens.
Barcode readers: There are two different kinds of barcodes. Linear barcodes can be read using a handheld barcode scanner or a laser scanner, as an example at a supermarket checkout. 2D barcodes, such as the QUick Response (QR) code shown below can hold more information than a linear barcode and are commonly used, for example, in ticketless entry to events.
Radio Frequency Identification(RFID)
RFID tags use electromagnetic fields to automatically identify trackers and track tags attached to objects, clothing or animals. An RFID tag consists of two parts: an antenna for transmitting and receiving signals, and an RFID chip (integrated circuit) which stores the tag’s ID and other information. An RFID reader can be fixed or handheld. MOst fixed readers require an ethernet cable in order to send and receive data, while some Wi-Fi RFID readers communicate over secure wireless networks. RFID have hundreds of different uses; tagging items in retail stores, inventory tracking, race timing in marathons and library systems.
Output devices
Output devices include printers, projectors, speakers, and lights (LED devices)
Printers
Laser and inkjet printers are the most common types of printers used in routine office or school work, or at home. A 3D printer is useful for creating prototypes or one-off products.
Speakers
Speakers are used to output music, beeps, alarms or warning signals and also voiced commands and explanations. Voice output is useful, for example, in giving instructions to the driver using an in-car GPS navigation system.
Monitors
Some users may have multiple monitors on their desk with different orientations so that they can, for example view a page of text in portrait view and at the same time, work on an image or search the internet on another screen on their desk.
Manual Data processing
Manual data processing typically involves entering data, processing it either manually or using software, and generating output.
Automatic data processing
Data entered by an operator…
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