A)mouseB)Barcode readerC)Optical Mark readerD) Printer
Optical Bar Reader
optical reader
Input - the reader is reading the bar code and putting the information into the computer
Yes, an optical reader that uses laser beams to read bar codes is commonly known as a laser barcode scanner. These devices emit laser light to scan and capture the information encoded in bar codes, which is then processed and converted into readable data. Laser scanners are widely used in retail, logistics, and inventory management due to their speed and accuracy. They can read bar codes from a distance and are often preferred for their efficiency in high-volume scanning environments.
The input and output devices of a computer are normally abbreviated as I/O devices.There are a variety of input units,which are used by computers.THE MOST COMMONLY USED UNIT OF THIS TYPE IS A KEYBOARD AND A MOUSE OF A DESKTOP COMPUTER.Special purpose units are scanners,magnetic ink character reader,optical mark reader,optical character reader and bar code reader.
your head
Input Devices:Keyboard, Mouse, Scanner, Microphone, Joystick, Web Cam, Optical Mark Reader, Optical Character Reader, Optical Bar code Reader, Touch Pen, Graphic digitizer, light pen, Touch pad\screen, Track ballOutput Devices:Monitor, Printer, Plotter, SpeakerBoth:CD, Pen-drive, MODEM, hard drive, tape drive, disk drive
Different bar code readers can be installed using Google's Play Store. The store offers a wide range of bar code scanners such as "Bar code Scanner from ZXing Team or Google's own implementation of a qr/bar code reader : Google Goggles.
There are several companies that make hand held bar code readers. You can even get an app for your smart phone that will read bar codes. A major manufacturer of bar code reader is Motorola (they bought "Symbol" the leading bar code reader company a while back). Look at: http://www.motorola.com/Business/US-EN/Business+Product+and+Services/Bar+Code+Scanning
bar code reader
There's an app for that