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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
Which one of the following is an input device?
Name the parts of a computer.
Identify the output device.
Identify the input device.
Which one of the following is the main memory?
What is the function of an ALU?
Write the functions of the control unit.
What is the function of memory?
Distinguish primary and secondary memory.
What is an input device? Give two examples.
Name any three output devices.
Write the significant features of the monitor.
The ______ is used to move the pointer on a computer screen.
Give some examples of input devices.
What are the two types of keys on the keyboard?
What are the parts of the CPU?
Which one of the following is not important part of computer?
Draw block diagram showing the main components of a computer.
