Computer is very use ful electronic devoice.in a computer has perform many task(ex:- photo editting video editting audio editting downloading e.t.c) in a computer one time many task is perform simatansly whiot any break computer is diffrent -2 version is available many computer is using the processor intel company latest intel processor is I7. in the present time computer is very imp every person . because our prime ministar is making a plan digital INDIA. so every thing is available in online.so computer knowledge is must for everybody.