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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
How does a computer work?
Pick out the odd one.
Explain in detail above the applications of computer.
Which one of the following is an input device?
Name the parts of a computer.
Which one of the following is used in ATM machines?
Which one of the following is the main memory?
What are the components of a CPU?
Write the functions of the control unit.
Differentiate Input and output units.
What is an input device? Give two examples.
Differentiate optical and Laser mouse.
Explain the basic components of a computer with a neat diagram.
Explain the following.
Multimedia projector
The ______ is used to move the pointer on a computer screen.
The page on the monitor can be moved up and down using the ______.
Give some examples of input devices.
Give the uses of the right and left buttons of the mouse.
What are the parts of the CPU?
Draw block diagram showing the main components of a computer.
