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it is a device for scanning
yes
To transform a physical document into an image file, follow these steps: Firstly, prepare your document by ensuring it is clear of any wrinkles or smudges. Next, select a reliable scanner device and connect it to your computer or mobile device. Then, open the scanner's software or a compatible app on your device. Position the document on the scanner bed, aligning it correctly. Proceed to select the desired image format (such as JPEG, PNG, or TIFF) in the scanning settings. Finally, initiate the scanning process and save the resulting image file to your preferred location on your device.
A pointing device just changes your location on the screen (moves the cursor). A scanning device converts printed output into digital input for processing by the computer.
A scanning device is something that looks over a surface and can transfer information. Scanning devices are used to tell you the price of things for example.
Dr. John Wild
Philo T. Farnsworth he did in fact invent this device.
Device files are useful for performing raw data operations. For instance, redirecting plaintext document to a printer (echo text.txt > lp0) instead of launching a dedicated program or interface for the task.
it is a mobile reading device.
you can use a biometric device instead of typing in an password on your computer. it is a much better way of keeping your stuff personal because everyone has different fingerprints. but anyone can get your password to a cmoputer. <hacking>
POINTING DEVICES SCANNING DEVICES VOICE INPUT DEVICES
Fingerprint Reader/Sensor/Scanner