Android :: Screen Capture And Time Clock Synchronization Applications?

I am new here and I came from Symbian and Linux, for all the phones I've used there are at least one application for screen capture and one for time clock synchronization, both are very useful and basic task we will do with a smartphone, but on the Android I found none that can work without a 'rooted' phone. I don't know how other phones do it, but I know the reason for a 'rooted' phone is to be able to access the framebuffer for screen capture for example and this may be risky, I suppose it is simply a sub-routine call to the BIOS will do without the need for a complete 'open access' system. I know there is a way to capture the screen without a rooted phone, but the phone must be connected to a PC and I feel this is dumb and inconvenient, I may be completely wrong about Android, please fill me in.