You can measure it by the amount of automatisation. The bigger technological process the easier it is to automate systems.
More than one sound source and listening device<span>
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The user requests an application to run by making a system call to get it started
Explanation:
do u mean screen reading as in reading books in ur mobile ?
if so then disadvantage is the amount of eye strain u get staring into the screen
and advantage is the portability.
