Computer Basic Information
What is the name of the reading device which mades use of photosensors and laser technologies to interpret printed, typed or even hand-written data directly from the source documents?

None of these
Mark-sensing device
MICR
ATM
OCR

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Computer Basic Information
The essential difference between an operating system like Linux and one like Windows is that

Linux is proprietary, whereas Windows is not.
Windows can run with an Intel processor, whereas Linux cannot.
None of these
any programmer can modify Linux code, which is not permitted with Windows.
there are multiple versions of Linux, but only one version of Windows.

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