ISO, UPC and GS1 are the abbreviations of what?
A barcode is an optical, machine-readable, representation of data; the data usually describes something about the object that carries the barcode. Initially, barcodes were only scanned by special optical scanners called barcode readers. Later application software became available for devices that could read images, such as smartphones with cameras.
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Ubuntu is the most popular Linux distribution, developed by Canonical Software owned by Mark Shuttleworth. What else is Mark famous for?
being a movie star
being an Olympic games attendant
being an astronaut
owning a submarine
What material is computer's processor made of?
single crystal ruby
single crystal silicon
What type of printers are typically used in cash registers?
Thermal transfer printer