What is the full form of COMPUTER ?

 Basically COMPUTER is not an abbreviated word or acronym, so there is no full form of it. But computer lovers and usres have generated many full forms of it. Few are:

C = Commonly
O = Operating
M = Machine
P = Purposely
U = Used for
T = Trade, Training
E = Education &
R = Research

Other is-

C = Common
O = Operated
M = Machine
P = Personally
U = Used for
T = Trade
E = Education &
R = Research

Other is-

C = Common
O = Oriented
M = Machine
P = Particularly
U = United and used under
T = Technical and
E = Educational
R = Research. 

Another is in different style:

 Com     +     Pu     +    Ter
Complete Purpose Terminal
       
                or

  Co     +     M     +     Pu     +     Ter
 Complete Multi Purpose Terminal

Remember, these are just terms to describe that what is COMPUTER.