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
Technology Partnerships: Such agreements provide the consumer un-limited access to vendor's technology. Such contracts are typically multi-year in nature where the consumer pa

Find the corresponding matrix of the digraph above

FUNDAMENTALS OF COMPUTERS 1. Describe the importance of video in multimedia. What are some of the tips to keep in mind while making video for the web? 2. Specify the steps t

Operating System: Operating  System is the software that manages all the computers' resources to optimize its performance provides common services for efficient execution of v

Question 1 Explanation of impact of Information Technology on governments Question 2 Explain application and system software Question 3 Briefly explain real time a

THE MICROPROCESSOR The three fundamental units, which comprise a CPU, have now been discussed in general terms.  So too has a microprocessor, because a microprocessor can be de

VDU (Visual Display Unit) output Make sure that VDUs are of an appropriate type. They can cause severe eyestrain and tension if you do not check: (a) Colour (

Goals of Autonomous Rational Agents: Artificial intelligence One possible way to improve an agent's performance is to enable it to have some kind of details about what it is tr

Consider the state transition diagram of Figure 3.9b. Suppose that it is time for the OS to dispatch a process and that there are processes in both the Ready state and the Ready/Su

The geometric mean is obtained by multiplying all the four numbers and taking the fourth root of the product. Let x 1 ,x 2 ,x 3  and x 4  be the given four numbers then geometric