Computer Fundamental Miscellaneous - Study Mode
[#641] The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?
Correct Answer
(A) Laser scanner
Explanation
Solution: A barcode scanner, also called a point-of-sale (POS) scanner or a price scanner, is a device used to capture and read information contained in a barcode. The scanner consists of a light source, a lens and a light sensor that translates optical impulses into electrical ones.
[#642] A processing unit that coordinates networks and data communication is known as
Correct Answer
(B) Communications processor
Explanation
Solution: A processing unit that coordinates networks and data communication is known as Communications processor.
[#643] A type of line printer that uses an embossed steel band to form the letters printed on the paper is
Correct Answer
(D) Band printer
Explanation
Solution: Band Printer : A line printer that uses a metal band, or loop, of type characters as its printing mechanism. The band contains a fixed set of embossed characters that can only be changed by replacing the band. The band spins horizontally around a set of hammers, one for each print column. Source : pcmag.com
[#644] Which memory system is not as a mass memory medium?
Correct Answer
(A) semiconductor memory
Explanation
Solution: Semiconductor memory is a digital electronic data storage device, often used as computer memory, implemented with semiconductor electronic devices on an integrated circuit (IC).
[#645] Different components on the motherboard of a PC processor unit are linked together by sets of parallel electrical conducting lines. What are these lines called?
Correct Answer
(B) Buses
Explanation
Solution: Components on the motherboard of a PC processor unit are linked together by sets of parallel electrical conducting lines. An important set of components on the motherboard is the chipset. The chipset is composed of various integrated circuits attached to the motherboard.