Central processing unit, Basic Computer Science

Central Processing Unit:

A Central Processing Unit (CPU) in a computer system is an extremely fast device as compared to the main memory, but it can not work on its own. It depends on the main memory that sends data and instruction when required for processing.

 In other words, we can say that even memories with smaller size (i.e. primary memory) have very high access time (time taken by CPU to access a location in memory), which reduces the overall speed of a computer. 

Computer memory can also be categorized on the  basis of Volatile  and Non-Volatile characteristics. Non-volatile Memory is a type of computer memory which can retain the stored information even if the power is shut down. Examples of Non-Volatile Memory are Read-only memory (ROM), flash memory, optical discs etc. On the other hand, a Volatile memory loses its content when the power goes off. Random Access Memory (RAM), which is the most common form of Primary Storage, is a type of volatile memory. When the computer is shut down, everything contained in RAM is lost.  

Posted Date: 10/22/2012 4:00:31 AM | Location : United States







Related Discussions:- Central processing unit, Assignment Help, Ask Question on Central processing unit, Get Answer, Expert's Help, Central processing unit Discussions

Write discussion on Central processing unit
Your posts are moderated
Related Questions
difference between recursion and iteration

The instructions of the logic functions are: and not, or and xor. These act on the bits of their operators. To make sure the result of the operations we revolve to the cmp and test

I. Write an application that accomplishes the following tasks: 1. Read a text file that contains, integers, doubles, alphabet, alphanumeric, and others. The name of the input fil

Problem 1. Explain the different categories of instructions. Explanation of 4 categories 2. Explain the steps to be followed for the addition of floating point numb

Question 1 What is routing? Explain the principles of routing Question 2 Explain different types of server operations in Enterprise Networking Question 3 Briefly d

QUESTION (a) What is Multi-Protocol Label Switching (MPLS)? List the main advantage of running MPLS in a service provider network (b) What is a label? Explain the structure

• Easy-to-learn: Python has comparatively few keywords, easy structure, and a clearly distinct syntax. This permits the student to pick up the language in a comparatively short per

Question 1 What do you mean by semantic networks? Explain inheritance in semantic networks Question 2 Explain Partitioned semantic networks with an example Question

to find the sum and average of five input number

QUESTION (a) Distinguish between passive and active attacks. (b) Give two reasons why it is important to organise security awareness programs for users. (c) Explain how s