Why are high-speed memories required, Computer Engineering

Assignment Help:

Q. Why are high-speed memories required? Is the main memory not a high-speed memory?

The answer to second question is absolutely 'No' though why so? Then if memories are slower then how slow are they? On an average it has been found that operating speed of main memories lack by a factor of 5 to 10 than the speed of processors (like CPU or Input / Output Processors).

Additionally every instruction needs numerous memory accesses (it may range from 2 to 7 or even more sometimes). If an instruction needs even 2 memory accesses even then nearly 80% of time of executing an expression, processors waits for memory access.

The main question is what can we do to increase this processor-memory interface bandwidth? There are four potential answers to the question which are:

a)  Reduce memory access time; use a faster though costly technology for main memory. 

b) Access more words in a single memory access cycle which is in place of accessing one word from memory in a memory access cycle access more words.

c)  Insert a high-speed memory called as Cache between processor and main memory. 

d)  Use associative addressing in place of random access.


Related Discussions:- Why are high-speed memories required

What are the different methods used for handling, What are the different me...

What are the different methods used for handling the situation when multiple interrupts occurs? 1) Vectores interrupts 2) Interrupt nesting 3) Simultaneous Requests.

What do you mean by proc directive, Q. What do you mean by PROC Directive? ...

Q. What do you mean by PROC Directive? PROC Directive: Code segment comprises executable code for a program that includes one or more procedures defined initially with PROC dir

Personal computer software, Personal Computer Software     The perso...

Personal Computer Software     The personal computer software market has burgeoned from the past decade. Spreadsheets, Word processing, computer graphics, database managemen

Explain the matlab language, This is a high-level matrix/array language wit...

This is a high-level matrix/array language with control flow statements, functions, data structures, input/output, and object-oriented programming features. It permits both "progra

Pipelining - computer architecture, Pipelining - computer architecture: ...

Pipelining - computer architecture: The Pipeline Defined According to John Hayes "A pipeline processor consists of a sequence of processing circuits, called stages or

Explain the major consideration of laptop computers, Explain the major cons...

Explain the major consideration of laptop One of the major considerations when buying a laptop is battery life. This can rely on a number of things though one major factor is p

How can i make text in a cell display in multiple lines, When entering word...

When entering word into the cell, press Alt-Enter to insert a line break. When you do so, Excel will automatically give text wrapping to the cell. To reformat existing cells s

Show types under which networks will be divided, What are the two broad typ...

What are the two broad types under which Networks will be divided? Ans: All computer networks fit in one of the two dimensions specifically: a)  Transmission Technology, thi

Period and space tradeoffs - artificial intelligence, Period and Space Trad...

Period and Space Tradeoffs - artificial intelligence: In practice, you are going to stop your agent for long term using in searching goal at some stage if it has not found a s

Advantage of wrapping database calls into mts transactions, Advantage of wr...

Advantage of wrapping database calls into MTS transaction If database calls are complete within the context of a transaction, aborting the transaction will undo and changes that

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