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प्रश्न
Explain the following.
Bar code/QR code Reader
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उत्तर
- A Bar code is a pattern printed in lines of different thicknesses.
- The Bar code reader scans the information on the bar codes transmits it to the computer for further processing.
- The system gives fast and error-free entry of information into the computer.
Quick response (QR) code: The QR code is the two-dimension bar code that can be read by a camera and processed to interpret the image.
संबंधित प्रश्न
Explain in detail above the applications of computer.
Which one of the following is an input device?
Bring out any two differences between input and output devices.
Identify the output device.
______ output device is used for printing building plans.
What is the function of memory?
Distinguish primary and secondary memory.
What is an input device? Give two examples.
Name any three output devices.
Differentiate optical and Laser mouse.
Write short notes on an impact printer.
Explain the basic components of a computer with a neat diagram.
Explain the following.
Inkjet Printer
The ______ is used to move the pointer on a computer screen.
The page on the monitor can be moved up and down using the ______.
The data is processed in the ______.
What are the two types of keys on the keyboard?
______ and ______ plays a role of Data in computer.
