Memory hierarchy:

There is another type of high speed memory, known as Cache memory, which is used to increase the speed of processing by making current programs and data available to the CPU at a rapid rate. Cache memory is a relatively small, high speed memory that stores the most recent used instructions or data. It acts as a high-speed buffer between main memory and the CPU.The cache memory is placed in between CPU and main memory. Access time is the time it takes a device or program to locate information and make it available to the computer for further processing. Cache memory access time is about 0.5 to 2.5 ns which is much less than that of the main memory. The access time of main memory is about 50-70 ns. Because of its very high cost, the capacity of the cache memory deployed is 2 to 3 percent of that of the main memory. The access time of mass storage devices such as hard disks are measured in milliseconds (ms).   

Posted Date: 10/22/2012 4:08:08 AM | Location : United States

Ask an Expert

Related Discussions:- Memory hierarchy, Assignment Help, Ask Question on Memory hierarchy, Get Answer, Expert's Help, Memory hierarchy Discussions

Write discussion on Memory hierarchy
Your posts are moderated

Write your message here..

Related Questions

Operation research, Least cost method Least cost method

Concept of instruction, Concept of instruction: The CPU is a semicondu... Concept of instruction: The CPU is a semiconductor integrated  circuit chip consisting of a large number of transistors. In personal computers, the CPU is also referred by the

Memory, why do computer have internal memory as a part of cpu and the inter... why do computer have internal memory as a part of cpu and the internal bulk memory seprately?

Artificial intelligence-internal structure of agents, Internal Structure of... Internal Structure of Agents We have looked at agents in conditions of their outside influences and behaviors: they take effort from the atmosphere and do lucid actions to chan

Object oriented programming, Write a method called Grade that takes a numer... Write a method called Grade that takes a numeric score and returns a letter grade. Use the rule that 90 to100 is an A, 80 to 89 a B, 60 to 79 is a C, 45 to 59 is a D, and less th

Multi-valued attribute dbms, Multi-valued Attribute DBMS Each multi valued ... Multi-valued Attribute DBMS Each multi valued attribute maps into a separate table. Include also an attribute for the primary key of the entity and relationship type which the attr

Data buses, Data buses: The availability of reliable digital semi-condu... Data buses: The availability of reliable digital semi-conductor technology has enabled the inter-communication task between different equipment to be significantly improved. P

Write the steps to use the network setup wizard, Question 1 Elaborate the ... Question 1 Elaborate the various steps in performing a Mail Merge. Execute one mail merge operation for sending invitation for a conference which is being conducted in your organi

Assignment, write an essay explaining the following: 1.Storage aspects a. D... write an essay explaining the following: 1.Storage aspects a. Disk formatting, b.Disk boot block ,c.Bad block removal, d.Compensation.

Assignment, Assignment of computer science Assignment of computer science