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Explain Elimination of common sub expression during code optimization
An optimizing transformation is a regulation for rewriting a segment of a program to enhance its execution competence without influencing its meaning. One of the methods is "Common sub expression elimination"
In given expression as "(a+b)-(a+b)/4", in this "common sub-expression" termed to the duplicated "(a+b)". Compilers implementing such technique realize that "(a+b)" won't modify, and as such, only compute its value once.
Why are interrupt masks provided in any processor? Interrupt mask enable the higher priority devices comes first and there for lower priority devices comes last. The interrupt
The typicality of virtual addresses is that: They are longer than physical addresses because total addressed memory in virtual memory is more than actual physical memory.
Timing for both read and update transactions should be gathered to verify whether system functions are being performed in an acceptable timeframe. This should be done standalone an
With relevant logic diagram and truth table explain the working of a two input EX-OR gate. Ans. 2-Input EX-OR Gate: An EX-OR or Exclusive gate recognizes words that have an od
What are the different methods used for handling the situation when multiple interrupts occurs? 1) Vectores interrupts 2) Interrupt nesting 3) Simultaneous Requests.
What are the address-sequencing capabilities required in a control memory? i. Incrementing the control address register ii. Unconditional branch as specified by address fiel
Determine the Minimal sum of products for the Boolean expression? Obtain the minimal sum of products for the Boolean expression f=(1,2,3,7,8,9,10,11,14,15) using Quine-McCluske
How are the function code handles in Flow Logic? When the User selects a function in a transaction, the system copies the function code into a specially designated
Cache coherence refers to the integrity of data stored in local caches of a shared resource. Cache coherence is a special case of memory coherence. When clients in a system, mainly
Why EPROM chips are mounted in packages that have transparent window? Since the erasure needs dissipating the charges trapped in the transistors of memory cells. This can be co
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