Define computer & Computer fundamental

Hi Learners !
  Welcome to the world of Computer Learning. As you know that nowadays there is no any Government or private sector where computers are not being used while the sector is of Health, Education, Communication, Business etc.
Everyone knows its importante and also some basic information but when a student is asked the above question 'What is Computer ?'
Then the student will try to define but he/she can't explain what is it.
So before going ahead let's understand what is Computer by its full form -
C - Commonly
O - Operating
M - Machine
P - Particularly
U - Used for
T - Technical
E - Education &
R - Research


Thank You for your comments