Before you start working with photo images on your computer (or even view them), you should really make sure that your video subsystem is capable and is displaying things correctly. These pages will assist you in adjusting your monitor by providing various test patterns. They also give a brief introduction to issues involved in calibrating a monitor
@ Ars Technica by Wayne "Hat Monster" Hardman "The BIOS is that dark, cavernous pathway to your computer's very soul that both beckons and repels the would-be performance seeker."
A Multi-Seat Linux Box: This tutorial shows how to build a multi-head, multi-user Linux box using a recent distribution of Linux and standard USB keyboards and mice. Xorg calls this arrangement a "multi-seat" system.
fairly simple DTMF decoder to control solenoid door unlocker and connected it to phone (in this case a cell phone). NOTE:CALLERID would save the phonecall as commented on the article