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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.
Associative Links: it is a link that is completely independent of the exact structure of the information. For illustration we have links depends on the meaning of various informat
What is meant by Addressability? Ans. Addressability is the number of individual dots per inch (d.p.i.) that can be formed. If the address of the current dot is (x, y) then the
Describe interactive model of computer graphics and application areas of interactive computer graphics.
QUESTION (a) Name the spaces and guides in the Figure below (b) What is the difference between Pantone and Process colors? Elaborate (c) Explain what i
Refresh Rate: refreshing on raster - scan displays is carried out at the rate of 60 to 80 frames per second, although some system are designed for higher refresh rates. Sometimes,
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QUESTION a) Once a print job is accepted by the print service provider, it will be assigned a job number and this information will become part of a printed job ticket, which wi
The hand-held pointer and tablet in the form of a stylus i.e. pen or puck can function one or more of these three functions: (i) For choosing positions on a drawing or on a men
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Ellipse Generation Algorithm You know that a circle is symmetric in all the octants, while ellipse is symmetric with respect to four quadrants. Therefore, to draw an ellipse,
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