2) Preservation of space is vital to being "small" Smaller means fewer parts which may or may not mean less expensive. ( competitive advantage ) Also smaller electronic chips allow devices to work faster because the electrons don't have to travel as far.
Smaller faster devices that use fewer electrons also use less battery power.
4) Dos gets information by starting on page 1 and working through the book. Mos starts wherever it needs to and jumps around for the answer. Mos can go directly to the answer whereas Dos must read all the chapters up to the answer.
5) Mos is faster with video because it can adjust to the size, speed and location of data that is being processed. Mos eliminates unnecessary steps.
6)Mos saves lots of battery life by efficent allocation of data, storing data into flash and lowering the use of a rotating drive.
7) The previous may be oversimplification but thats what you get for now. :-)
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