Depends what one is doing, but for anyone doing engineering CAD two monitors is a minimum (and preferably both full HD 24" or bigger) and three is preferred. Example: Schematic and PCB layout, where one monitor has the project overview plus any data sheets etc needed for the current task, the second has the schematic full screen and the third has the PCB layout, again full screen. Anything less than this setup hinders productivity, trying to do all this on just one monitor kills one's work flow and one is at very best only 50% efficient, and probably less. See Altium Designer pages for examples - all their promo stuff shows three monitors, and this is because one really does need three monitors. And yes, part of the integrated Altium environment is embedded C code as part of the project. Maybe writing code one can do it all on a iPhone size screen, personally I don't believe it (but then I started out with 80 column punch cards and paper tape so perhaps I am being short sighted on this issue). N.B. I am not an Altium user. I use Mentor PADS and DxDesigner, and for hobby stuff (to publish) RS components DesignSpark - http://www.designspark.com/home - which is well worth looking at for anyone who needs to do a bit of Schematic PCB work for their embedded projects. BW, Susan.