Event driven devices - polling, Computer Graphics

Assignment Help:

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.

 


Related Discussions:- Event driven devices - polling

Distinguish between bitblt and pixblt, Distinguish between bitBlt and pixBl...

Distinguish between bitBlt and pixBlt?  Raster functions that manipulate rectangular pixel arrays are usually referred to as raster ops. Moving a block of pixels from one locat

Parallel source and distributed light source, Parallel source and Distribut...

Parallel source and Distributed light source a) Parallel source: this is to be noted that while point source is at an infinite distance then light rays are parallel and func

Determine how many key frames does one minute animation film, How many key ...

How many key frames does one minute animation film order along with no duplications need if there are five in among for each pair of key frames?   Solution : One minute = 60 sec

Steps for clip a line segment-pq, Steps for clip a line segment-PQ ...

Steps for clip a line segment-PQ Initially, find all the points of intersections of the line segment PQ along with the edges of the polygonal window and describe them eith

Windowing transformations - raster graphics and clipping, Windowing Transf...

Windowing Transformations - Raster Graphics and  Clipping From the above section of introduction, we understood the meaning of the viewport and term window that could again be

Define refresh rate and refresh buffer, Refresh Rate: refreshing on raster...

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,

You, are you a robot

are you a robot

Digital video, Digital Video: Digital video is a form of video record...

Digital Video: Digital video is a form of video recording system which works through using a digital, quite than analog, representation of the video signal. It generic means,

Ellipse generating algorithm, Ellipse generating algorithm: Algorithm ...

Ellipse generating algorithm: Algorithm is similar to circle algorithm. We divide the ellipse on the positive quadrant into two regions. Region 1 where the slope > -1, and Reg

What is meant by scan code, What is meant by scan code? When a key is p...

What is meant by scan code? When a key is pressed on the keyboard, the keyboard controller places a code bear to the key pressed into a part of the memory known as the keyboard

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd