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

Homogeneous coordinate systems - 2-d and 3-d transformations, Homogeneous C...

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, Computer Animation The term Animation is derived fr...

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

Line drawing display - random scan display device, Line Drawing Display - R...

Line Drawing Display - Random Scan Display Device The display through this system is termed as Line Drawing Display. The sequence controls the subsequent stages, demonstrated

Whether cavalier projection is a parallel projection, State whether the fol...

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, Define coherence properties?  A coherence ...

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, List out the merits and demerits ...

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

Convert the rgb values for the colours, In computers, colours are created b...

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

What is the purpose of saving selections, Question 1: (a) Once a select...

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

Briefly describe the variants of the interaction model, Question: a) Th...

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, Types of Graphic Images: Graphic images have...

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

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