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Thread: Compiler Design

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The Shadow - Mask CRT

The shadow mask CRT, instead of using one electron gun, uses 3 different guns placed one by the side of the other to form a triangle or a \"Delta\"as shown. Each pixel point on the screen is also made up of 3 types of phosphors to produce red, blue and green colors. Just before the phosphor screen is a metal screen, called a \"shadow mask\". Click here for free notes Read this topic
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    Passionate FaaDoO Engineer prasanjeet roy's Avatar
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    Rar 32 Compiler Design

    Introduction: When one starts running the program then some data is only available at run time, so we must relate the static source text of a program to the actions that must occur at run time to implement the program. We need to understand the relationship between names and data objects (address and value).

    Allocation & de-allocation is managed by run time support package which consists of routines loaded with the generated target code. Each execution of a procedure is referred to as an activation of the procedure. If the procedure is recursive, several of its activations may be alive at the same time. We will be dealing with activations of two procedures whose lifetimes are either non overlapping or nested. That is, if a and b are procedure activations and b is entered before a is left, then control must leave b before leaves a. We will not be dealing with partially overlapping activations (threads). A procedure is recursive if a new activation can begin before an earlier activation of the same procedure has ended.

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    Last edited by FaaDoO-Engineer; 10th May 2011 at 07:31 PM. Reason: Post Reformatted!

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    Fuchcha FaaDoO Engineer
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    nice one ..............keep up the good work ....

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