Computer Studies
Define SD card
Peripheral Devices
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Answer
Secure Digital card is an ultra small flash memory or a non-volatile memory card designed to provide high capacity memory in a small size. It measures 32 X 24 X 2.1 mm and weighs approximately 2 grams.
SD cards are used in many small portable devices and the storage capacity varies from 1 GB to 16 GB.
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There are some devices in a computer system which are used to give out the result of data processing. A popular output device about which you would be well aware of resembles a TV screen. In case, the output is to be displayed on a big screen for showing it to numerous people, an LCD projector is used. Other than these devices, we can also use printers (impact and non-impact) to produce the output on paper.
Based on the above case, answer the following questions:
(a) Which of the following devices resemble a TV screen?
- Touch sensor
- VDU
- MCB
- All of the above
(b) Which device produces result on paper with hammering effect?
- LCD projector
- Laser printer
- Dot Matrix printer
- Inkjet printer
(c) Which of the following devices produce result without making any sound?
- Impact printer
- Character printer
- Dot Matrix printer
- Laser printer
(d) Which of the following devices is used to display presentation in a hall or a gallery?
- Digital camera
- Laptop screen
- LCD projector
- Seven segment display
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