Solved

what is a processor?

Posted on 2009-05-14
4
251 Views
Last Modified: 2012-05-07
Hi can anyone tell me what a processor is and does and if possible why the more of them is better?
0
Comment
Question by:ac_davis2002
  • 2
  • 2
4 Comments
 
LVL 4

Accepted Solution

by:
hugetoon earned 500 total points
ID: 24392863
The processor is the device that executes programs in your computer.

To do its work the processor communicates (and controls) other devices like Memory (RAM, ROM), peripherals (Disks, Video and Network adapters etc).
The communication with peripherals is done via a data bus (PCI, AGP ....)

When executed, programs reside in memory, for example when the computer is tourned on the processor reads and executes instructions stored in ROM, these instructions are often called BIOS.

The BIOS program tries to find a storage device where another program resides: the Operating System. Once found, parts of the Operating System are transferred from the storage device to RAM and the the processor starts to execute them.

The operating system loads more programs from disk to RAM (exe files for windows).

In a multitasking operating system many programs can be executed "in parallel". Actually they all reside in RAM and the processor switches between the very fast under the control of the operating system.

When you have many processors, if the operating system supports it (most do), the processors run program in parallel for real.

For example while one processor executes the operating system, the other executes your favorite FPS game.


 



0
 

Author Comment

by:ac_davis2002
ID: 24392878
Excellent!!
0
 

Author Closing Comment

by:ac_davis2002
ID: 31581816
First class
0
 
LVL 4

Expert Comment

by:hugetoon
ID: 24392971
Please note that the description is simplified, it would take several books to describe everything accurately and in detail.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Linux on a Dell PowerEdge 720 3 155
Determine Server Specs for IIS.7 Website 4 66
Problem to router 7 82
What are the purpose of ESXi local storage usage ? 5 75
Requirements: root access via SSH, telnet, or other.. Alternately, access from the server administrator to run a counter-strike server, and the proper access rights to do so. Enough free disk space (and allowed to use this much, eg disk quota): 6…
Learn about cloud computing and its benefits for small business owners.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

685 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question