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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.
What is the difference between impact and non-impact printers? Impact printer press produced character faces against an inked ribbon on to the paper. A line printer and dot-ma
Remark for Perspective projection - Transformation A Perspective projection can have at most three Principle Vanishing points and at any rate one Principle vanishing point. To
1. Using a time Delay Method The delay required between issuing each character to the LCD is about 5-10ms (it's simply known as DELAY). When programming an LCD, a long delay is
Question : You have been approached to design a ‘tuck top auto-lock bottom' carton package for a high-end cosmetic jar under the brand name ‘Beauty One'. Your client asked you
OBJECTIVE Since graphics plays a very important role in modern computer application, it is important to know more information about its hardware and software operations. Despite
1. If you perform a x-direction shear transformation and then a y-direction shear transformation, will the result be the same as the one which is obtained when it is simultaneous s
Scaling, shear, reflection and Viewing coordinates 1) Scaling, shear and reflection operations have natural extensions to 3D. 2) Viewing coordinates are the coordinates
An object has to be rotated about an axis passing through the points (1,0 ,1), (1,3,1) . What will be the resulting rotation matrix? Solution: The axis is parallel to y axis
What are the components of an electron gun.
what is region filling? give details
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