Hi, This is my understanding, which can definitely be corrected. They are something like the programs that run under Windows as services. In the DOS days, they were called TSR's. They stay in memory and watch for stuff to happen, then react to the events that take place. Jim ---------- Jim Homme Usability Services 412-544-1810 james.homme@xxxxxxxxxxxx "You can do anything you want to if you put your mind to it" -- Jim Homme Sr. -----Original Message----- From: programmingblind-bounce@xxxxxxxxxxxxx [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Alex Hall Sent: Thursday, June 25, 2009 1:16 PM To: programmingblind@xxxxxxxxxxxxx Subject: aemons? Hi all, I am a bit confused about daemons. I get that they are simple programs to do a single task, I think anyway, but when someone says "daemon", what do they mean? Is a hook a daemon? If daemons are simple, why are they used for such complex tasks as mail delivery? Are they software, or can they be firmware on microprocessors in otherwise non-computerized devices, like cars or thumb drives? Sorry for the random question, but I have heard the word a lot and cannot quite figure it all out. Thanks. Have a great day, Alex __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind This e-mail and any attachments to it are confidential and are intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this e-mail without the author's prior permission. The views expressed in this e-mail message do not necessarily represent the views of Highmark Inc., its subsidiaries, or affiliates. __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind