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Event Driven Devices - Polling
Polling: The status of all devices is periodically checked in a repetitive manner through a polling loop. While an event happens, the loop is exited and the consequent event is handled by executing some special event-handling routine or task. Again the polling carries on. The disadvantage is, the processor has to stay in an idle state till some event happens. Data entered can be missing if an event happens at a time while the major program is not in its polling loop.
Homogeneous Coordinate Systems - 2-d and 3-d transformations Suppose P(x,y) be any point in 2-D Euclidean (Cartesian) system. In HC System, we add a third coordinate to a poin
Computer Animation The term Animation is derived from 'animate' that literally means 'to give life to', 'Animating' a thing implies to impart movement to something that can't m
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State whether the following statements are true or false. Give reasons/examples to justify your answer. a) Cavalier projection is a parallel projection. b) Angles are not
Define coherence properties? A coherence property of a scene is a part of a scene by which relate single part of the scene with the other parts of the scene.
List out the merits and demerits of DVST? The merits and demerits of direct view storage tubes [DVST] are as follows It has a flat screen Refreshing of screen is
In computers, colours are created by blending different combinations of red, green and blue. These colours are normally specified as three two-digit hexadecimal numbers in html, ph
Question 1: (a) Once a selection is made, what area of the image can be edited? (b) What is the purpose of saving selections? (c) How can you move a selection while you a
Question: a) The implications of transparency are a major influence on the design of system software. There are eight forms of transparency. Name and give a small description o
Types of Graphic Images: Graphic images have been processed through a computer can generally be divided in two distinct categories. That image is either bitmap files or vecto
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