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Q. What is Shadow Mask?
Shadow Mask is a metal sheet that has fine perforations (holes) in it and is situated a short distance before phosphor coated screen. The Phosphor dots and holes in shadow mask are so organised that beams from a particular gun will strike dots of that colour only. The dots of other two colours are in the shadow. In an attempt to overcome some flaws of Shadow masks because of their round holes, Sony presented Aperture grills (in their Trinitron technology) which are slots in an array of vertically arranged wires.
Figure: Shadow Mask and Aperture
Question 1: a) The aim of a computer network is to increase efficiency and reduce costs. Describe how networks achieve the above. b) Explain briefly how the bus topology op
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reate a directory "Unix" under your home directory. Command(s): ………………………………………….
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Distinguish between combinational logic circuits and sequential logic circuits. Ans: Combinational logic circuits:- (i) Outputs only depend upon present state of the i
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