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 is called checking CRC in cyclic redundancy, In cyclic redundancy chec...

In cyclic redundancy checking CRC is the? Checking CRC, in cyclic redundancy is the remainder. Normal 0 false false false EN-IN X-NONE X-NONE

Derive the expression of traffic capacity, Traffic Capacity is given by? ...

Traffic Capacity is given by? Traffic Capacity = Switching capacity × Theoretical maximum load.

How to modify or delete a custom class name, 1. Click Tools > General Optio...

1. Click Tools > General Options, and then click the Object Mapping tab. 2. From the Object type list, select the standard object type that is associated with the object class

Total number of registers in a cpu, Q. Total number of registers in a CPU? ...

Q. Total number of registers in a CPU? Factors to consider when choosing total number of registers in a CPU are:  CPU can access registers faster than it can access m

Explain the number unobtainable tone in strowger telephony, Explain the num...

Explain the number unobtainable tone in strowger telephony with waveforms and the timings. In the following figure illustrates the number unobtainable tone that is continuous

Explain priority encoder with an example, Explain Priority encoder with an ...

Explain Priority encoder with an example. Ans. Priority encoder- Basically an encoder is a combinational circuit which performs the inverse operation of a decoder. The inp

Design a simple digital clock., Use a timer interrupt to design a easy digi...

Use a timer interrupt to design a easy digital clock.  This clock will count only minutes and seconds, and start at 00:00 every time your program starts.  The show on the screen sh

First-order logic - artificial intelligence, First-Order Logic We, as h...

First-Order Logic We, as humans, have always prided ourselves on our ability to think things through for this reason things are out and come to the only conclusion possible in

How atoms differ from the arrangement of atoms in a liquid, Q. How does the...

Q. How does the preparation of atoms in mainly solids differ from the arrangement of atoms in a liquid? Answer:- The arrangement of atoms in solids are diverse from those

Procedures relating to the deployment of the server, Edith & Associates is ...

Edith & Associates is a modern law firm. They have an Internet Link that is an ADSL 8MB links from JJNET. The server they are to deploy will the main service giving  server and wil

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